CLEANING & INSPECTION
Cleanliness is important. Dirt and foreign material that gets into the steering system during repair operations can
cause damage or a possible steering malfunction at a later date. Due to the close tolerances between mating parts
it is best to have all parts at the same temperature for reassembly.
Clean the machined parts individually to avoid damage caused by "bumping" together. Use clean solvent to
wash parts. Dry the parts with compressed air. Nicks or burrs must be removed with a fine hand stone before
assembly. Use clean lubricant to coat parts for assembly.
All hoses, lines and the reservoir should be cleaned before reinstalling a repaired steering gear or after pump
Make a careful visual inspection of all steering gear parts. Replace worn parts as well as any parts that show
signs of stress or fatigue.
STEERING GEARS THAT HAVE BEEN DAMAGED IN AN ACCIDENT MUST BE
REPLACED. IMPACT LOADS TRANSMITTED THROUGH THE FRONT AXLE
AND STEERING LINKAGE INTO THE STEERING GEAR CAN STRESS PARTS
TO A POINT JUST SHORT OF FAILURE. FURTHER USE IS UNSAFE AND THE
STEERING GEAR ASSEMBLY AND PITMAN ARM MUST BE REPLACED. DIS-
T O RT E D PITMAN ARMS, T W I S T E D SECTOR SHAFTS, B RO K E N OR
CRACKED RACK AND PINION GEAR TEETH ARE SOME SIGNS OF IMPACT
DA M AG E . B RO K E N OR DAMAGED MOUNTING BRACKETS MUST BE
Steering gear parts inspection may show problems in other areas of the steering system. To avoid repeat prob-
lems inspect all parts carefully. Listed below are the more common problems you may see during steering gear
inspection along with their possible cause. This information should be considered carefully when repairing low
mileage vehicles. Remember it is more important to repair the cause than the results.
1. Operating temperatures too high
1. Accident damaged
Parts Discolored (blue)
2. Steering column binding
3. Hydraulic supply pump
Foreign material entry
Housing or Piston Scoring
(Also see following
Incorrect lubricant used
Incorrect lubricant use
Excessive temperature (over
Sector Shaft (Roller
Overloading the axle
5. Pump damaged
1. Foreign material in system
2. Excessive overloading
1. Impact damages
(ball thread brinelled
1. Impact damage
2. Incorrect repairs
(broken or distorted)
Incorrect lubricant used
1. Incorrect installation
Piston Rings (cut,
2. Incorrect assembly
pinched, sheared or worn)
Insufficient operating pressure
Insufficient oil flow
Continued operation at high
Note on scoring
Minor scoring and scuffing of the piston and housing of the steering gear is normal. During operation at rela-
tively high pressure and flow rates, this minor scoring will not affect the safety or operation of the steering gear.
Minor scoring should be polished with a fine hand stone or crocus cloth.
The cylinder bore should not be honed or bored out. This will increase internal leakage.