67. Steering Head
Probable cause
Possible remedy
Tires not inflated to proper pressure ................................ ... Check and inflate all tires to proper pressure (75 psi).
Excessive friction in tie rod or drag link joints ..................... Inspect and adjust (paras. 218 and 222) and lubricate
as required (LO 5-3810-227-15).
Excessive friction in steering gear assembly ....................... Adjusting steering gear (para. 218).
Loose pump belt or pulley ................................ ................... Adjust pump belt and replace a faulty belt or pulley
if necessary (paras. 145 and 149).
Ruptured or weak spot in tire ................................ .............. Inspect tube for rupture and replace tire and tube if
necessary (para. 228).
Lack of fluid ................................ ................................ ....... Tighten all lines and fittings and replace a defective
line or fitting. Fill to level with proper Hydraulic
oil as specified in LO 5-3810-227-16.
Faulty operation of steering valves ................................ ..... Clean and adjust steering valves. Replace as necess ry
a
Steering wheel creeps ................................ ........................ Adjust control valve or replace if necessary (paras.
Shock absorber defective ................................ ................... Replace a defective shock absorber (para. 229).
68. Improper Air Pressure
Probable cause
Possible remedy
Air pressure in system is above normal .............................. Check governor settings. Adjust air compressor un-
if necessary. (para. 479).
Air reservoir damaged................................ ......................... Inspect air reservoir and replace if necessary (para.
69. Carrier Handbrake Does Not Hold When Applied
Probable cause
Possible remedy
Handbrake linkage out of adjustment ................................ . Adjust linkage (para. 14c).
70. Carrier Has No Brake Action, Insufficient Action or Brakes Apply Slowly
Probable cause
Possible remedy
Improper brakeshoe adjustment ................................ ......... Adjust brakeshoes (paras. 241 and 242).
Worn brake linings ................................ .............................. Adjust for lining wear or replace brakeshoes or linings
Blocked, bent, or broken tubing or hose ............................. Remove obstruction in line or replace faulty tubing
Brake valve delivery pressure below normal ....................... If brake valve is defective, replace unit (para. 238).
No air pressure ................................ ................................ ... Replace or repair air compressor (paras. 479-481)
71. Brakes Release too Slowly With Pedal Released
Probable cause
Possible remedy
Insufficient brakeshoe clearance................................ ......... Adjust brakeshoes if clearance is insufficient (paras.
Weak or broken valve diaphragm return spring................... Replace brake valve (para. 234).
Defective quick release valve ................................ ............ Replace quick release valve (para. 235).
72. One Brake Drags With Pedal Released
Probable cause
Possible remedy
Insufficient brakeshoe clearance................................ ......... Adjust brakeshoe clearance (paras. 241 and 242).
Blocked or defective quick release valve ............................ Clean or replace faulty unit (para. 235).
Weak or broken brakeshoe return spring ............................ Replace faulty spring (paras. 241 and 242).
Brakeshoe binds on anchor pin ................................ .......... Remove shoe; clean and lubricate anchor pins (paras.
73. Brakes Grab When Pedal is Depressed
Probable cause
Possible remedy
Brakeshoe clearance too great ................................ ........... Adjust clearance (paras. 241 and 242).
AGO 6819A 71
