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page 16

T-16-UT (4+16)

2.3

Running Gear

Suspension

The suspension on your trailer is either a rubber torsion axle type or the slipper leaf

spring type. Rubber torsion suspensions require no maintenance.

Slipper springs have an eye formed in one end of the spring only with the other end

formed into a reverse curve. The attachment of these springs is as follows:

1. The front eye is attached directly into the front hanger with a bolt and nut.

2. The rear end of the spring is captured in the rear hanger or equalizer with a

‘keeper bolt’ that prevents the spring from coming out when the trailer is jacked up for
service.

Visually inspect the suspension system every 6,000 miles for signs of excess wear,

elongation of bolt holes, and loosening of fasteners. Whenever loose or replaced the
fasteners in your suspension system should be torqued as detailed below:

1. U-bolt- 45 to 60 lbs.-ft.

2. Shoulder Type shackle bolt- 30 to 50 lbs.-ft.

3. Fasteners with castle nuts- snug fit only. The cotter pin will retain the nut-bolt

assembly.

Hubs and Drums

Hub Removal- Whenever the hub equipment on your trailer must be removed for

inspection or maintenance the following procedure should be utilized:

1. Before jacking up the wheel, break loose the wheel lug nuts. Do not loosen them

more than 

1

/

2

 turn while the trailer wheel is still on the ground.

2. Jack up the wheel. Use a jack stand to support the axle. If the wheel does not

rotate freely, back off the brake adjustment. Remove the wheel.

3. Remove the grease cap (hubcap) by carefully prying progressively around the

flange of the cap.

Maintenance

Содержание T-16-UT (4+16)

Страница 1: ...ce 13 2 1 Structural Components 14 Sub Frame 14 Deck 14 2 2 Sub Assembly Components 14 Coupling 14 Jack 15 Cushion Cylinder 15 Deck Latch 15 Deck Hinge Assembly 15 2 3 Running Gear 16 Suspension 16 Hu...

Страница 2: ...ring Voltage 35 Measuring Amperage 37 Electric Brake System Troubleshooting Chart 38 2 9 Pre Storage Maintenance 40 2 10 Pre Season Maintenance 41 Section 3 Parts 42 3 1 Structural Components 42 3 2 M...

Страница 3: ...river awareness and skill can help compensate for these factors This knowledge will assist you to safely enjoy the maximum utility and productivity from your trailer First and foremost DO NOT operate...

Страница 4: ...nded to carry the full rated capacity of the trailer Extreme concentrated appli cations may require additional support for the load 1 4 Vehicle Load and Handling Limits Vehicle handling limits can be...

Страница 5: ...ificantly to the handling characteristics of the combination and allow the driver to utilize all the design responses of the vehicle to make evasive maneuvers in the safest manner Irregular terrain st...

Страница 6: ...amiliar the driver is with the vehicle and the road the less likely he will need to make abrupt emergency maneuvers which will take the vehicle to its limits Control and stability may be main tained i...

Страница 7: ...s that a safety defect exists in a group of vehicles it may pursue a remedy campaign and recall those vehicles However NHTSAcannot become involved in individual problems between you your dealer or Gem...

Страница 8: ...ath DANGER DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING WARNING indicates a potentially hazardous situation which if not avoid...

Страница 9: ...djusting the trailer hitch to compensate for settling of tow vehicle springs when loaded Always visually inspect hitch for unusual appearances such as bent components cracks in welds or chipped paint...

Страница 10: ...their attachment to both the trailer and the towing ve hicle Connect safety chains to tow vehicle using crossed pattern under tongue Allow slack for turning but avoid having chains drag on pavement M...

Страница 11: ...aking capacity or other unstable trailer characteristics which could result in an accident causing property damage bodily injury or death It is the operators responsibility to take whatever steps nece...

Страница 12: ...loading or unload ing it is very important that ramps are adjusted to proper spacing for equipment being transported When loading equipment onto deck drive slowly forward until appropriate tongue loa...

Страница 13: ...onthly Check for loose or missing suspension fasteners Check brake adjustment see page 25 Quarterly Lube Dico surge actuator rollers see Surge Actuator Maintenance on page 27 Annually Pack wheel beari...

Страница 14: ...either rubber compound or wood For wood decks it may be necessary to apply a new coat of wood preservative after decking has aged and become dry The best time to apply preservative is during warm wea...

Страница 15: ...and or sluggish Fully collapse the cylinder and then remove the filler plug and drain out the old fluid Add 10W hydraulic fluid until the cylinder is full and all the air has been expelled Deck Latch...

Страница 16: ...excess wear elongation of bolt holes and loosening of fasteners Whenever loose or replaced the fasteners in your suspension system should be torqued as detailed below 1 U bolt 45 to 60 lbs ft 2 Shoul...

Страница 17: ...sed air or a lint free cloth and inspect each roller completely Also clean and inspect the cups races inside the hub Any pitting spalling bluing heat damage or corrosion is cause for replacement NOTE...

Страница 18: ...ar oil ofAPI GL 5 performance level SAE 90 weight oil is normally preferred for most operating environments Other approved oil weights are SAE 80W 90 SAE 80W 85W 90 and SAE 75W 90 Seal Inspection and...

Страница 19: ...spindle nut back on the spindle in the reverse order of removal Rotate the hub assembly in both directions while tightening the adjusting nut to approximately 100 lbs ft of torque 2 Loosen nut to rem...

Страница 20: ...This refers to the relationship of the center line of the tire to the hub face of the axle Care should be taken to match a replacement wheel with the same offset wheel as originally equipped Failure t...

Страница 21: ...hreads must be clean dry and in good condition for applying installation torque Tighten the lug nuts in the following pattern in three steps first to 20 25 lbs ft next to 50 60 lbs ft and then to the...

Страница 22: ...Rubber Manufacturers Association or the tire manufacturer Inflation Pressure Correct inflation pressure for the 215 75R 17 5 tire is 125 psi and is the most important factor in tire life Inflation pr...

Страница 23: ...particular load per tire catalog Side Wear Loss of camber or over loading Adhere to load limits Have axle aligned Toe Wear Incorrect toe in Have axle aligned Cupping Loose bearing or out of balance A...

Страница 24: ...mp or volt meter to verify that the electrical system is functioning properly If it is then replace the lamp if not then troubleshoot the electrical system Junction Block The junction block requires n...

Страница 25: ...ground especially if you are going to be working under the trailer Brake Adjustment Brakes should be adjusted 1 after the first 200 miles of operation when the brake shoes and drums have seated 2 at 3...

Страница 26: ...lining is worn to 1 16 thickness or less contaminated with grease or brake fluid or abnormally scored or gouged Hardware Check all hardware Check shoe return spring hold down springs and adjuster spr...

Страница 27: ...ers which then causes the trailer brakes to be applied Surge Actuator Maintenance Before towing check that the brake fluid reservoir is full If not refill to 3 8 inch below the top of the reservoir wi...

Страница 28: ...lock tabs and clamps are in place and securely holding the lines to the frame Look for signs of leakage especially if you have had to add fluid to the reservoir frequently Check the tubing for kinks c...

Страница 29: ...ft wheel cylinder left rear if tandem axle You should always begin the bleeding operation on the wheel cylinder that is farthest from the master cylinder Have the loose end of the hose submerged in a...

Страница 30: ...DER OR WHEEL CYLINDER PISTONS REPLACE EXCESSIVE DRUM WEAR BLEED SYSTEM TRAPPED AIR IN LINES CORRECT OVERLOADED TRAILER TROUBLESHOOT SYSTEM MALFUNCTIONING ACTUATION SYSTEM ADJUST BRAKES OVERLOADED TRAI...

Страница 31: ...he electromagnets in the brakes The high capacity electromagnets are energized and are attracted to the rotating armature surface of the drums which moves the actuating levers in the direction that th...

Страница 32: ...ol lers provide a modulation function that varies the current to the electric brakes with the pressure on the brake pedal or amount of deceleration of the tow vehicle It is important that your brake c...

Страница 33: ...wheels and tires not all trailer brakes are capable of wheel lockup If the controller is applying the trailer brakes before the tow vehicle brakes then the controller level adjustment should be adjust...

Страница 34: ...romagnets that are de signed to provide the proper input force and friction characteristics Your magnets should be inspected and replaced if worn unevenly or abnormally As indicated below a straight e...

Страница 35: ...ne of the tow vehicle should be running when checking the voltage so that a low battery will not affect the readings Voltage in the system should begin at zero volts and as the controller bar is slowl...

Страница 36: ...6 T 16 UT 4 16 Maintenance From Trailer Harness From Trailer Harness To measure VOLTAGE measure across both brake magnet wires To measure AMPERAGE measure between one open brake magnet wire VOLTMETER...

Страница 37: ...ding Individual brake amperage draw can be measured by inserting the ammeter in the line at the magnet you want to check Disconnect one of the magnet lead wires and attach the ammeter between the two...

Страница 38: ...hness or malfunction are traceable to improperly adjusted or non functioning controllers See your controller manufacturers data for proper ad justment and testing procedures If the voltage and amperag...

Страница 39: ...E GLAZED LININGS CORRECT CORRECT BROKEN BRAKE COMPONENTS OVERLOADED TRAILER ADJUST CLEAN OR REPLACE INCORRECT BRAKE COMPONENTS UNDERADJUSTMENT CORRECT MACHINE OR REPLACE GREASE OR OIL ON LININGS OR MA...

Страница 40: ...at the weight will be off the tires The best way to jack the trailer for this is to place the jack under the trailer frame rail using a wood block to protect the finish Raise the jack until the suspen...

Страница 41: ...ring 5 Check brake magnets with an ohmmeter The magnets should check at 3 2 ohms If shorted or excessively worn replace the magnets 6 Lubricate all brake moving parts BRAKE LINING CONTAMINATION Do not...

Страница 42: ...ts 3 1 Structural Components Ref Quantity Description Part No 1 2 Safety Chain and HookAssembly 3 8 ASSY 2 2 FenderAssembly SA 05139 3 1 Right Hand Tail Light Bracket SA 12779 4 1 Left Hand Tail Light...

Страница 43: ...page 43 T 16 UT 4 16 Parts 1 2 3 5 4...

Страница 44: ...ws 1 4 20 x 2 1 2 32519 Rubber Deck Ref Quantity Description Part No 1 14 Rubber Compound Decking 9102 16 2 400 Torx Deck Screws 1 4 20 x 2 1 2 32519 Note Rubber compound decking requires additional c...

Страница 45: ...165 2 1 Screw and Nut Assembly 712216 3 1 Crank Assembly Kit 800075 4 1 Screw Nut and Bearing Replacement Kit 500220 Note Kit names are bold type while component names are regular type kit compo nents...

Страница 46: ...page 46 T 16 UT 4 16 Couplers Ref Quantity Description Part No 1 1 2 5 16 Coupler 75074 Parts 1...

Страница 47: ...page 47 T 16 UT 4 16 Parts Ref Quantity Description Part No 1 1 Pintle Eye BDB 1250 Note Pintle Eye and associated hardware is an available option P A R T S 1...

Страница 48: ...ider ShaftAssembly SA 12538 7 1 Slider Shaft Spring CT 135 11 8 1 3 8 x 4 Roll Pin G4323 9 1 Slider Shaft Bushing C 05100 10 2 E Clip PO 150STZD 10385 00117 11 1 Square U bolt 5 8 18 x 4 7 8 10094661...

Страница 49: ...page 49 T 16 UT 4 16 1 Cushion Cylinder Ref Quantity Description Part No 1 1 Cushion Cylinder 30x12 P A R T S Parts...

Страница 50: ...page 50 T 16 UT 4 16 3 3 Running Gear Suspension 8K Ref Quantity Description Part No 1 2 8000 Rubber TorsionAxle 7800127 1 Parts...

Страница 51: ...page 51 T 16 UT 4 16 Parts P A R T S THIS PAGE LEFT BLANK INTENTIONALLY...

Страница 52: ...ylinder Kit 1 00 Bore Containing 1 046 130 00 Spring 2 054 032 00 Boot 2 054 041 00 Piston 2 054 085 00 Cup 1 054 035 00 Bleeder Screw K71 080 00 7 1 Cylinder Push Rod 054 033 00 8 1 LH Spider Assembl...

Страница 53: ...page 53 T 16 UT 4 16 Parts P A R T S 1 2 3 3 3 4 5 6 7 8 10 11 12 13 14 15 9 16 17 18 19 20...

Страница 54: ...55 01 5 1 RHArm Shoe Retainer 071 455 02 6 1 Flange Nut 006 092 01 7 1 Magnet Kit Containing 1 042 127 00 Magnet 1 027 050 00 Magnet Retainer Clip 1 046 117 00 Magnet Spring K71 375 00 8 2 Centering S...

Страница 55: ...page 55 T 16 UT 4 16 Parts P A R T S 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20...

Страница 56: ...4 8 Wheel Stud 007 232 00 5 1 Brake Drum 8 stud on 6 5 circle 008 285 10 6 1 Oil Filler Plug 046 052 00 7 1 Outer Bearing Cup 031 028 01 8 1 Outer Bearing Cone 031 028 02 9 1 Spindle Washer 005 057 0...

Страница 57: ...ls and Tires Ref Quantity Description Part No 1 1 Tire 215 75R 17 5 2 1 Wheel 17 240 3 8 Wheel Nut 1 2 20 60 6 58 Note Tires are not available through Gem State Manufacturing contact your local equipm...

Страница 58: ...val Mounting Grommet 60700 6 1 License Plate Lamp 26331 7 1 Main Harness 50941 8 1 Intermediate Main Harness 88725 9 1 Front Main Harness 88719 10 1 Marker Clearance Harness 50350 0108 11 1 Marker Cle...

Страница 59: ...page 59 T 16 UT 4 16 Parts P A R T S 5 4 10 9 7 2 3 2 1 8 6...

Страница 60: ...ow Left Turn White Ground Brown Tail and Marker Black Electric Brake Only Accessories Black Surge Brakes Only Vehicle Back Up Lights Note For surge brake equipped trailers Wire from tow vehicle back u...

Страница 61: ...et Pigtail 94619 Note Kit names are bold type while component names are regular type kit compo nents if itemized are indexed under the kit name Kit component quantities are per kit other parts and kit...

Страница 62: ...26 T 16126 C 8 1 Brake Line 80 T 16080 C 9 1 Brake Line 3 16 X 20 1 2 5 Bend RH 0716 001 1 1 Brake Line 3 16 X 20 1 2 5 Bend LH 0716 001 2 1 Brake Line 3 16 X 20 3 Bend RH 0716 001 3 1 Brake Line 3 16...

Страница 63: ...page 63 T 16 UT 4 16 Parts P A R T S 3 4 1 7 8 10 2 9 5 6...

Страница 64: ...8 Hex Head Bolt Grade 5 05961 13 2 5 16 External Tooth Lock Washer 05424 14 4 1 4 20 UNC x 2 Hex Head Bolt Grade 5 00618 15 4 1 4 Lock Washer 00057 16 1 Emergency Lever 05951 17 1 Push RodAssembly 035...

Страница 65: ...page 65 T 16 UT 4 16 Parts P A R T S 20 25 24 18 17 15 14 21 23 13 12 11 7 9 16 10 22 2 8 5 1 3 4 6...

Страница 66: ...Valve 05561 3 1 Brass Fitting Str 2 HB X 10 32 NF 4 2 Crimp Clamp 10374 5 1 Straight Nipple 1 8 MPT X 1 8 MPT 10375 6 1 Brass Elbow1 8 MPT X 2 HB 7812 Note Kit names are bold type while component name...

Страница 67: ...t 3 Contact a TrailMax representative in your immediate area If you do not have or can not find a representative in your area then contact the factory WarrantyAdministrator for as sistance 1 800 447 0...

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