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4-8.2

Spring Air Brake Chamber

Repair or replace faulty units. Check the con-

densation holes on the underside of the brake

chambers to make sure they are open. The spring

brake has two brake chambers, a service chamber

and an emergency chamber or spring chamber.

Service brake chambers should be disassembled

and cleaned at 50,000 miles or yearly. The dia-

phragm and any marginal parts should be re-

placed. The spring chamber should not be serv-

iced. Replace entire unit if spring chamber be-

comes faulty. When replacing the service dia-

phragm, replace the corresponding parts for the

other chamber on the same axle (to aid in even

brake application and release). Examine yoke pin

for wear and replace as necessary.

WARNING

THE SPRING BRAKE CHAMBER EM-

PLOYS A SPRING WITH HIGH FORCES.

SERVICE SHOULD NOT BE AT-

TEMPTED. SERIOUS INJURY OR

DEATH MAY RESULT.

a.

Caging the Power Spring

1.

Chock the semitrailer wheels.

2.

Remove dust cap from spring brake

chamber.

3.

Remove the release bolt from it’s holding

brackets and insert it into the spring brake

chamber. DO NOT USE AN IMPACT

WRENCH TO CAGE THE SPRING

BRAKE!

4. T

urn the bolt until the spring brake is

caged. This should be 2-1/4 to 2-1/2 inches

of release bolt extension.

5.

The brakes should now be released. Do

not operate loaded semitrailer with brake

manually released.

6.

To reset the spring brake, turn the release

bolt until the spring is released. Remove

the release bolt and store it in its brackets.

7.

Snap the dust cap back in place on the

chamber.

b.

Removal

1.

Chock all tractor and semitrailer wheels

and drain the air system.

2.

Mark the brake chamber for proper air line

port alignment for reassembly.

3.

CAGE THE POWER SPRING following the

steps outlined in

Section 4-8.2 a.

4.

Disconnect the slack adjuster from the

connecting rod by removing the clevis pin

(

See Figure 4-12)

.

5.

Mark all air service lines for proper

re-installation and disconnect from the brake

chamber.

6.

Remove the brake chamber from the axle

brackets.

c.

Installation

1.

CAGE THE POWER SPRING following the

steps outlined in

Section 4-8.2 a.

2.

Position the inlet ports by loosening the

service chamber clamp bands and rotating

the center housing so the ports align with

marks made during disassembly. Then

re-tighten the clamp bands.

3.

Loosen the clamp bands on the spring

brake chamber and rotate the chamber

housing until the breather hole faces

downward. Re-tighten the clamp bands.

4.

Remount the brake chamber on the axle

brackets and reconnect the air service

hoses and the slack adjuster connecting

rod

(See Figure 4-12).

4-15

Figure 4-10 Brake Lining Wear

Summary of Contents for 330A

Page 1: ...MODEL 330A SEMITRAILER OPERATOR S MANUAL 1900 North Street Marysville KS 66508 785 562 5381 F 268 398 3 98...

Page 2: ...a defective part This warranty is void if any part not supplied by LANDOLL is used in assembly or repair or if the machine has been altered abused or neglected LANDOLL repair parts are warranted for n...

Page 3: ...MODEL 330A SEMITRAILER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO...

Page 4: ...wever NHTSA cannot become involved in individual prob lems between you your dealer or Landoll Manufacturing To contact NHTSA you may either call the Auto Safety Hotline toll free at 1 800 424 9393 or...

Page 5: ...CEDURE 3 6 3 11 UNLOADING THE TRAILER 3 9 3 12 WINCH CONTROLS 3 10 3 13 AUXILIARY HYDRAULIC POWER ENGINE OPERATION 3 11 3 14 BULKHEADS 3 12 3 15 REAR IMPACT GUARD SYSTEM 3 13 3 16 ANTI LOCK BRAKE SYST...

Page 6: ...IF NOT AVOIDED WILL RESULT IN DEATH OR SERIOUS INJURY WARNING WARNING INDICATES A POTENTIALLY HAZARDOUS SITUA TION WHICH IF NOT AVOIDED COULD RESULT IN DEATH OR SERIOUS INJURY CAUTION CAUTION INDICAT...

Page 7: ...ranty IF YOU HAVE ANY QUESTIONS CONTACT LANDOLL CORPORATION 1900 NORTH STREET MARYSVILLE KANSAS 66508 or phone 785 562 5381 or 800 428 5655 or FAX 785 562 4893 SECTION 5 is a troubleshooting guide to...

Page 8: ......

Page 9: ...ADAPTER BOLTS 800 FT LBS SHOCK ABSORBER MOUNTING 150 FT LBS AIR SPRING MOUNTING 1 2 35 FT LBS 3 4 35 FT LBS FOUR SPRING SUSPENSION AXLE CLAMP U BOLTS 300 FT LBS EQUALIZER BEAM PIVOT BOLT 480 500 FT L...

Page 10: ...65 81 90 112 9 16 12 55 62 80 100 110 137 9 16 18 60 75 90 112 130 162 5 8 11 75 94 110 137 170 212 5 8 18 85 106 130 162 180 225 3 4 10 130 162 200 250 280 350 3 4 16 150 188 220 275 320 400 7 8 9 12...

Page 11: ...146 75 85 16 115 125 202 218 109 121 20 160 180 248 272 213 237 24 185 215 303 327 238 262 32 250 290 310 340 LANDOLL CORPORATION HYDRAULIC FITTING TORQUE SPECIFICATIONS 37o JIC ORS ORB REV 10 97 THIS...

Page 12: ......

Page 13: ...e trailer is operated from the towing vehicle after coupling The towing vehicle s air system must be coupled to the trailer and charged to 90 psi minimum before the brakes can adequately function 3 0...

Page 14: ...ct brake action on all wheels for prompt application b Release brakes All brakes should release immediately Air pressure should discharge quickly from the relay emergency valve c Disconnect the emerge...

Page 15: ...HYDRAULIC SYSTEM 3 4 TRACTOR AND SEMITRAILER CHECK OUT 3 4 1 While hydraulic power is operating raise the front end of the semitrailer with the TRAILER TILT lever See Figure 3 2 until weight is off th...

Page 16: ...ontrol brake before descending a hill or attempting a curve 3 5 2 Make a moving test of the semitrailer brakes at low and medium speeds before traveling at highway speed a The Anti Lock Brake System A...

Page 17: ...and lower landing gear to the ground Hydraulically raise the front end of the semitrailer until the next hole in the landing gear is available Insert pin through both inner and outer legs of the landi...

Page 18: ...lowest low load angle 3 10 3 Park the tractor semitrailer in a straight line on level even surface Set the tractor brakes and release the semitrailer brakes See Figure 3 3 3 10 4 Start operation of h...

Page 19: ...edown in case load tiedown fails but is not to replace tie downs 3 10 8 If the load center of gravity is not ahead of the rear axle alternate between tilting the front of the bed up and moving the und...

Page 20: ...3 8 Figure 3 3 Steps for Loading and Unloading...

Page 21: ...w load angle the undercarriage has to be all the way forward The object is to keep a part of the weight on the approach plate and part of the weight on the wheels while lowering the tilt angle The max...

Page 22: ...TO BE USED FOR LIFTING OR MOVING PEOPLE USING IT THIS WAY CAN CAUSE SERIOUS INJURY OR DEATH 2 NEVER ATTEMPT TO DISENGAGE THE WINCH CABLE SPOOL WHEN THE CABLE IS UNDER TENSION LOSS OF LOAD CONTROL PROP...

Page 23: ...TANK 2 IF THE ENGINE DOES NOT CRANK CHECK THE FOLLOWING ON THE BATTERY CHARGE FLUID TERMINALS AND CABLES TAKE COR RECTIVE ACTIONS AS NEEDED CAUTION IF THE HYDRAULIC FLUID LEVEL IS LOW DURING OPERATIO...

Page 24: ...e control in or out as needed until the engine runs smoothly at a speed capable of with standing use of the hydraulic controls The hydraulic controls should now be functional 3 13 9 Before shutting it...

Page 25: ...anti lock brake system requires all trailers with air brake systems to have ABS after March 1 1998 Each trailer including a trailer converter dolly shall be equipped with an anti lock brake system th...

Page 26: ...3 14 Figure 3 7 Rear Impact Guard System...

Page 27: ...er basic questions for the anti lock brake system obtain outline procedures on how to adjust test remove and install ABS components as well as how to test for faults in the system by using Blink Code...

Page 28: ...ponents i e tires light and hose grommets hoses etc and paint life 3 18 3 Check tire pressure early in the day be fore beginning operations while the tire is cool Put all valve stem caps back on after...

Page 29: ...ically for damage or signs of pending failure Damaged or broken parts must be repaired or replaced at once Determine the cause of any binding or hy draulic leakage at once Correct the problem before u...

Page 30: ...lti purpose Grease Ronex Multi purpose Grease Phil Lube M W Grease MarFax All Purpose 4 ALL YEAR Industrial Oil 32 Estic 32 Condor 32 or Magnus 32 Regal Oil R O 32 5 ALL YEAR Gear Lube SAE 80W 90 Gear...

Page 31: ...NMENT I I UNDERCARRIAGE ROLLERS L 3 c HYDRAULIC OIL I I R 1 c HYDRAULIC FILTER R R HOSES I I R WINCH GEAR CASE I I 2 c I Inspect R Replace T Tighten Adjust Torque L Lubricate C Clean NOTES a Perform a...

Page 32: ...aks With engine running visually and audibly check exhaust system for leaks X2 Perform more often when running under severe operating conditions X3 Required for initial break in only X4 For detailed m...

Page 33: ...ime b Use any mineral spirits paint thinner or its equivalent to remove grease and oil from all parts of the semitrailer Rinse degreasing so lution off with cold water c Inspect semitrailer for cause...

Page 34: ...4 6 Figure 4 2 330A Wiring Diagram...

Page 35: ...4 7 Figure 4 3 Remote Wiring Diagram...

Page 36: ...ST WINCH LIGHT DS20 FIRST WINCH LIGHT DS21 ABS MALFUNCTION INDICATOR YELLOW J1 FRONT MAIN CONNECTOR J2 FRONT DECK CONNECTOR J3 U C CONNECTOR J4 U C MID CONNECTOR J5 AUX LIGHTS PWR GRND CONN 330A WIRIN...

Page 37: ...ion specifications please refer to the engine owners manual that was sup plied with the hydraulic engine package 4 5 ELECTRICAL SYSTEM 4 5 1 Maintenance of the electrical system consists of inspection...

Page 38: ...ections Only b Check all other suspension components for any sign of damage looseness wear or cracks c With trailer on level surface and air pressure in excess of 65 psi all air springs should be of e...

Page 39: ...NING ACCIDENT 1 SUPPORT TRAILER AND UNDER CARRIAGE SO TIRES ARE OFF THE GROUND 2 SUPPORT THE TRAILER AND UN DERCARRIAGE ON JACK STANDS WITH SUFFICIENT CAPACITY TO SUP PORT THE TOTAL WEIGHT OF THE TRAI...

Page 40: ...4 12 Figure 4 6 Examples of Camber Figure 4 7 Checking Axle for Bend...

Page 41: ...4 Measure D from the plumb bob to the center point on one end of the axle Record this measurement See Figure 4 8 5 Measure D1 to the other end of the axle in the same manner as in Step 4 Record this m...

Page 42: ...e above table 4 Tighten the front axle torque arm clamp bolts to the torque listed in the above table 5 Align the rear axle to the front axle in the same manner using the torque arm for adjusting The...

Page 43: ...of release bolt extension 5 The brakes should now be released Do not operate loaded semitrailer with brake manually released 6 To reset the spring brake turn the release bolt until the spring is relea...

Page 44: ...4 16 Figure 4 11 Axle and Brake Assembly...

Page 45: ...e brake linings visually to locate the lining show ing the greatest amount of wear The wheel and drum should be removed and the linings replaced if the thinnest portion of the lining is 3 8 in 9 5 mm...

Page 46: ...bly 1 Install new anchor pin bushings camshaft bushing and camshaft seals into the spider IMPORTANT WHEN INSTALLING CAMSHAFT SEALS THE SEAL ON THE SLACK ADJUSTER SIDE IS IN STALLED FACING INTO THE SPI...

Page 47: ...4 19 Figure 4 13 Three Spoke Wheel and Drum Figure 4 14 Outboard Mount Hub and Drum...

Page 48: ...diameter cast into the brake drum supersedes all pub lished information b When resurfacing a drum allow at least 0 040 inches under the maximum diameter for additional wear WARNING TURNING A BRAKE DR...

Page 49: ...ld be clear ance between the spoke and the brake drum or the brake drum will not function properly l Install inner bearing cone and seal IMPORTANT DO NOT MIX NEW CUPS WITH OLD CONES OR NEW CONES WITH...

Page 50: ...seating of the bearings and cups in the wheel hub f Loosen the inner adjustment nut so that the wheel will turn freely g Retighten the inner adjustment nut to 50 ft lbs while rotating the wheel to pr...

Page 51: ...en the two mating tires of a dual See Figure 4 17 b Straight Edge or String Method This method can not be used if tire and wheel as semblies are not mounted on the axle Jack semitrailer up until the w...

Page 52: ...4 24 Figure 4 19 Mounting Tires and Wheels Figure 4 20 Stud Tightening Sequence...

Page 53: ...E PROPER TORQUE INSUFFICIENT TORQUE CAN CAUSE STUD BREAK AGE AND DAMAGE WHEEL PILOTS OVERTORQUE CAN OVERSTRESS THE STUDS AND STRIP THE THREADS 4 12 WINCHES Inspect the winch cable before and after eve...

Page 54: ......

Page 55: ...r or replace couplings Hydraulic supply hooked up backwards SYSTEM OPERATES ERRATICALLY Air in the system Check suction side of system for leaks Repair leaks Check hydraulic oil reservoir level Cold o...

Page 56: ...n or replace CYLINDERS MOVE WITH CONTROL VALVE IN NEUTRAL POSITION Leaking cylinder seals or fittings Replace worn seals or fittings Control valve not centering when released Check linkage for binding...

Page 57: ...ration and repair Short circuit Replace fuse and try all accessories If fuse blows right away locate short and repair LAMP BULB BURN OUT Vibration Locate source of vibration and repair Short circuit R...

Page 58: ...rding to road and load conditions High speed cornering Adjust cornering practices Over loading Check rim load rating In all instances of rim failure replace the rim immediately BENDING OR WARPING Curb...

Page 59: ...in hose Locate restriction and remove Worn brake linings Reline brakes Grease on linings Reline brakes Broken slack adjuster Replace slack adjuster Call Factory or see qualified Trailer Brake Technic...

Page 60: ...e chamber Call Factory or see qualified Trailer Brake Technician Leaking tubing or hose Replace part s EXCESSIVE LEAKAGE WITH EMERGENCY SYSTEM ONLY APPLIED NO LEAKAGE WITH NORMAL BRAKING Relay emergen...

Page 61: ...rums Pull drums and inspect for any of the following Heat spotted drums grease spotting blue drums scored drums excessive wear at rivet holes or edges polished drums out of round drums unbalanced drum...

Page 62: ...NOTES 5 8...

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