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TD-42-T

Manual Brake (Free Stroke) Adjustment

DISENGAGING THE PAWL!

You must disengage a pull pawl or remove a conventional pawl before

rotating the manual adjusting nut, or you will damage the pawl teeth. A
damaged pawl will not allow the slack adjuster to automatically adjust
brake clearance. Replace damaged pawls before putting the vehicle in
service.

1. Disengage a pull pawl or remove a conventional pawl. The pull pawl can be

disengaged by prying up on it with a screwdriver at least 

1

/

32

".

2. Turn the adjusting nut in the counterclockwise direction until the linings touch the

drum, and then turn the adjusting nut in the opposite direction (clockwise) 

1

/

2

 turn.

3. Repeat the free stroke measurement procedure. If it is necessary to adjust the

stroke, turn the adjusting nut 

1

/

8

 turn clockwise to lengthen the stroke, or 

1

/

8

 turn coun-

terclockwise to shorten the stroke. Repeat these steps until the free stroke length is
correct.

4. Release the pull pawl or reinstall a conventional pawl.

Maintenance

CAUTION

!

Pawl

Adjusting Nut

Summary of Contents for TD-42-T

Page 1: ...nce 17 2 0 Periodic Maintenance 17 2 1 Structural Components 18 Sub Frame 18 Deck 18 2 2 Sub Assembly Components 18 Drawbar Eye 18 Binkley Jack 19 Cushion Cylinder 19 Deck Latch 19 Deck Hinge Assembly...

Page 2: ...rake Lubrication 35 Section 3 Parts 36 3 1 Structural Components 36 Sub frame 36 Deck Assemblies 37 3 2 Major Sub Assemblies 38 Drawbar Eye 38 Binkley 2 Speed Jack 39 Cushion Cylinder 40 Deck LatchAss...

Page 3: ...tability limits and how driver 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...

Page 4: ...recommended 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...

Page 5: ...ailer wheels will add significantly 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 m...

Page 6: ...liar 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 if t...

Page 7: ...or death 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...

Page 8: ...freely until they are removed To remove the release tool assemblies use the following procedure see illustration on next page 1 Hook up trailer to tow vehicle and or put air to the air brake system on...

Page 9: ...page 9 TD 42 T Operation Spring Brake Chamber Rubber Seal Release Tool Assembly O P E R A T I O N Release Tool Assembly in storage position...

Page 10: ...if it finds 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 de...

Page 11: ...er to achieve the correct hitch height elevate the tongue of the trailer slightly 1 to 2 by adjusting the trailer hitch to compensate for settling of tow vehicle springs when loaded Always visually in...

Page 12: ...leg when it is off the ground Check all safety chains and their attachment to both the trailer and the towing ve hicle Connect safety chains to tow vehicle using crossed pattern under tongue Allow sla...

Page 13: ...n it is not easy to calculate the total load or determine the load center of gravity A decal on the trailer similar to the one shown below indicates the correct placement of the load Load the trailer...

Page 14: ...ior to 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 tong...

Page 15: ...s to be used with chain slots When securing loads with chains the chains should not exceed angles shown in illus trations below Viewed from above chain should not be angled more than 45 degrees in eit...

Page 16: ...page 16 TD 42 T THIS PAGE LEFT BLANK INTENTIONALLY...

Page 17: ...correct hitch height Check lights for correct operation Quarterly or 10 000 miles Check wheel flange nut torques see page 28 Check brakes for adjustment see page 32 Semi Annually or 25 000 miles Lubr...

Page 18: ...on If the trailer has been overloaded or in an accident inspect the tilt deck carefully It may be necessary to apply a new coat of wood preservative after decking has aged and become dry The best time...

Page 19: ...cylinder has leaked or if the deck action has become jerky or sluggish Fully collapse the cylinder and then remove the filler plug and drain out the old fluid Add 10W hydraulic fluid until the cylinde...

Page 20: ...e forces of an impact If they show any signs of deformity from having been impacted by the RIG pivot arms they should be replaced immediately In no case should the crush blocks be straightened or re p...

Page 21: ...the suspension have worked together for a very short period of time re torquing the bolts is necessary to insure that undue move ment which results in excessive suspension wear does not occur During...

Page 22: ...Oiled Torque Dry Torque 1 1 1 8 7 Rocker Bolt 590 lb ft 790 lb ft 2 5 8 18 Spring Retainer Bolt 35 lb ft 50 lb ft 3 1 14 Radius Rod Bolt 540 lb ft 720 lb ft 4 5 8 18 Radius Rod Clamp Bolt 130 lb ft 17...

Page 23: ...er the hub equipment on your trailer must be removed for inspection or maintenance refer to the Meritor Maintenance Manual 14 Trailer Axles beginning with Section 2 Hub Inspection Clean the hub with a...

Page 24: ...checks or other surface defects resulting from normal use The following should be noted when turning the brake drum 1 The maximum diameter cast into the back plate portion of the brake drum is the dis...

Page 25: ...E SYSTEM IM PROPER ADJUSTMENT OR INFERIOR LINING CHECK BRAKE DRUM LINING CONDITION AND BRAKE BALANCE AVOID CONDITIONS OR LOADS WHICH CREATE HIGH BRAKE TEMPERATURES BLUE OR DISCOLORED BRAKE SURFACE EXC...

Page 26: ...HOLE WHEEL HITTING BRAKE DRUM INSTALLATION ON DIRTY HUB MOUNTING FLANGE SEPARATED FROM HOOP SECTION OF DRUM REPLACE DRUM CLEAN THE HUB PRIOR TO INSTALLING NEW DRUM INCORRECT APPLICATION REPLACE BRAKE...

Page 27: ...heels on your trailer be certain that the replacement units match the originals in the following regards 1 Type The disc wheels and capnuts on your trailer are of the hub pilot design 2 Material Do no...

Page 28: ...th great force and can cause serious injury or death Wheel Torquing Procedures When installing the wheels make sure that the hub and wheel mating surfaces are clean and free of rust dirt and excess pa...

Page 29: ...mounting procedures as outlined by the Rubber Manufacturers Association or the tire manufacturer Inflation Pressure Correct tire inflation pressure for both the 215 75R 17 5 tires and the 255 70R 22...

Page 30: ...r 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 Adjust bearing balan...

Page 31: ...ge with a test lamp or volt meter to verify that the electrical system is functioning properly If it is then replace the lamp if not then trouble shoot the electrical system Junction Block The junctio...

Page 32: ...athing dust 2 Avoid machining filing or grinding the brake linings 3 Do not use compressed air or dry brushing for cleaning Dust can be removed with a damp brush RISK OF PERSONAL INJURY Whenever it be...

Page 33: ...b Measure the free stroke Make the same two measurements as described above for measuring the applied stroke but instead of air pressure use a lever to move the slack adjuster arm until the brake sho...

Page 34: ...The pull pawl can be disengaged by prying up on it with a screwdriver at least 1 32 2 Turn the adjusting nut in the counterclockwise direction until the linings touch the drum and then turn the adjus...

Page 35: ...the 22 turns then the slack adjuster is not working correctly and should be rebuilt or replaced 4 Reinstall the slack adjuster on the axle and check the free stroke length Adjust if necessary For more...

Page 36: ...n Part No 1 1 Sub frameAssembly SA 03169 2 2 Safety Chain and HookAssembly 3 8 ASSY 3 2 Front Hanger 7701 01 4 2 Rocker Hanger 16319 01 5 2 Rear Hanger 7703 01 6 2 Lower Latch Side Plate C 04019 7 1 T...

Page 37: ...49 2 2 StepAssembly SA 04069 3 2 Deck Lumber 2 1 8 X 8 24 4 9 Deck Lumber 2 1 8 X 10 10 5 1 Deck Lumber 2 1 8 X 10 24 6 5 Deck Lumber 2 1 8 X 12 10 7 2 TrailMax Mudflap B30PCB 8 2 Mudflap Bracket MFW...

Page 38: ...T Parts 3 2 Major Sub Assemblies Drawbar Eye Ref Quantity Description Part No 1 1 Premier 300 Drawbar Eye 300 2 4 3 4 x 2 1 2 Bolt Grade 8 NF 18992 3 4 3 4 Lock Washer 33632 4 4 3 4 Hex Nut Grade 8 NF...

Page 39: ...page 39 TD 42 T Parts P A R T S Binkley 2 Speed Jack Ref Quantity Description Part No 1 1 Binkley 2 Speed Jack LG4701 72 2 1 Universal Crank LG0083 01 3 1 Jack Handle Extension SA 04291 1 2 3...

Page 40: ...page 40 TD 42 T Cushion Cylinder Ref Quantity Description Part No 1 1 Cushion Cylinder 5 X 12 5012 1 Parts...

Page 41: ...page 41 TD 42 T THIS PAGE LEFT BLANK INTENTIONALLY...

Page 42: ...2 Adjusting Bolt 15359 2 1 Latch Hook C 04109 3 2 Glide Latch Bearing GFI 1618 08 4 1 Latch Pin C 06050 5 2 E clip SE 982 D 10385 00128 Lower Latch Assembly 1 1 LatchArm Assembly SA 12552 2 1 Latch H...

Page 43: ...page 43 TD 42 T Parts P A R T S 1 5 Upper Latch Assembly 4 3 2 2 5 1 3 Lower Latch Assembly 4...

Page 44: ...e Assembly Ref Quantity Description Part No 1 1 Deck Hinge Assembly SA 04027 2 2 Hinge BracketAssembly SA 07099 3 2 Hinge Pin C 06179 4 2 3 8 24 Top Lock Nut Gr C Zinc 37304 5 2 3 8 24 x 3 1 2 Cap Scr...

Page 45: ...1 Torsion BlockAssembly 8020141 9 1 Adjustable Radius Rod 16398 04 10 1 Torsion Block Pivot Pin C 12229 11 1 Linkage Pin Short C 12239 12 2 Linkage Pin Long C 12249 13 2 5 8 18 x 1 3 4 Cap Screw Gr 8...

Page 46: ...s Rod 19 25 16398 04 6 8 Flanged Locknut 10562 00 7 8 Radius Rod Bolt 719 02 8 4 3 Leaf High Arch Spring TS 365 00 9 8 U bolt 7816 11 10 4 Bottom Plate 706 01 11 16 Washer 35 00 12 16 Hex Nut 34 04 1...

Page 47: ...page 47 TD 42 T Parts P A R T S 16 2 14 13 15 9 1 4 3 7 5 6 8 10 11 12...

Page 48: ...Description Part No 1 2 Tire 255 70R 22 5 2 2 Wheel 22 5 x 8 25 28408 3 2 Valve Stem 572 4 10 22mm x 1 5 Wheel Nut R005991 Note Tires are not available through Gem State Manufacturing contact your loc...

Page 49: ...page 49 TD 42 T Parts P A R T S THIS PAGE LEFT BLANK INTENTIONALLY...

Page 50: ...t 10704 9 5 Red clearance lamp sealed 10205R 10 4 Oval stop turn tail light sealed 60202R 11 4 Oval mounting grommet 60700 12 1 License plate lamp 26331 13 1 Harness ABS 52200 0084 14 1 Amber ABS lamp...

Page 51: ...page 51 TD 42 T P A R T S Parts 2 1 3 4 5 6 7 8 9 8 10 11 12 13 17 16 15 14...

Page 52: ...ical Plug Ref Quantity Description Part No 1 1 Seven Way Plug and Spring PL 15 730 Brown Tail and Marker Blue ECU Power Electric Brakes Black Accessories Yellow Left Turn White Ground Green Right Turn...

Page 53: ...page 53 TD 42 T Parts THIS PAGE LEFT BLANK INTENTIONALLY...

Page 54: ...8 Nylon Tubing Black NT PF6BIN0E 10 1 Air Tank 1200 2800 cu in AT1211 11 4 Hose Assembly 3 8 x 3 8 x 30 TA32002 030 12 4 Hose Assembly 3 8 x 3 8 x 62 TA32002 062 13 3 Street Elbow 90 PB2200P 6 6 14 1...

Page 55: ...page 55 TD 42 T Parts P A R T S Detail shown on follow ing pages 4 7 5 6 2 1 3 3...

Page 56: ...page 56 TD 42 T Parts Hose end fitting included with 3 8 hose assemblies Hidden under tank 12 16 10 11 12 13 11 11 12 12 14 15 11 9 8...

Page 57: ...page 57 TD 42 T Parts Hidden between ECU and tank P A R T S 13 5 20 22 18 17 4 21 13 6 19 15...

Page 58: ...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 0213 4 Give a detailed description and...

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