TM-5-3805-254-14-P-2
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
JUNE 1980
TM-5-3805-254-14-P-2 - Page 6 of 894
FRONT AXLE
TRUCK SERVICE MANUAL
CLEANING
Clean parts having ground and polished
surfaces, such as knuckle pins, knuckle pin sleeves,
bearings and spindles, with solvent type cleaners such
as emulsion cleaners, or petroleum solvents excluding
gasoline.
Do not clean these parts in a hot solution tank
or with water and alkaline solutions such as sodium
hydroxide, orthosilicates or phosphates.
DRYING
Parts should be thoroughly dried immediately
after cleaning.
Use soft, clean, lintless, absorbent paper
towels or wiping rags free of abrasive material, such as
lapping compound, metal filings or contaminated oil.
Bearings should never be dried by spinning with
compressed air.
INSPECTION
It is impossible to overstress the importance of
careful and thorough inspection of steering knuckle
components prior to reassembly.
Thorough visual
inspection for indications of wear or stress and the
replacement of such parts as are necessary will
eliminate costly and avoidable front end difficulties.
1. Inspect the steering knuckle thrust bearing,
wheel bearing cones and cups.
Replace if
rollers or cups are worn, pitted or damaged in
any way.
2. If wheel bearing cups are to be-replaced,
remove from hubs with a suitable puller.
Avoid
the use of drift and hammers as they may easily
mutilate cup bores.
3. Inspect the steering knuckles and replace if
indications of weakness or excessive wear is
found.
4. Check wear of the knuckle pins; compare with
correct specification.
5. Check king pin bushing wear (see Bushing
Installation).
6.Check the tightness of the steering connections such
as tie rod arms, steering arm, etc.
CORROSION PREVENTION
Parts that have been cleaned, dried, inspected
and are to be immediately reassembled should be
coated with light oil to prevent corrosion.
Spindles,
knuckle pins or sleeves that are to be stored for any
length of time should be treated with a good rust
preventative and wrapped in oiled paper and boxed to
keep dry and clean.
REPAIR OF FORGED PARTS
In deciding whether to repair or scrap a
damaged part, always keep in mind that we, as
manufacturers, never hesitate to scrap any part which is
in any way doubtful.
1. Straightening of bent parts should be done cold.
Various components are heat-treated and hot
straightening would destroy some of the heat
treatment.
2. Axle centers (that are bent no more than 1/2")
may be straightened cold; if bent more than 1/2"
they should be replaced.
Bent steering arms or knuckles should be
replaced rather than straightened.
FRONT WHEEL ALIGNMENT
The alignment of chassis according to the
specifications should prevent mis-adjustment, which can
affect tire wear, directional stability and steering wheel
alignment.
Check alignment at regular intervals and
particularly after front suspension has been subjected to
extremely heavy service or severe impact loads.
Before
checking and adjusting alignment, components such as
wheel bearings, tie rods, steering gear, shock absorbers
and tire inflation should be inspected and corrected
where necessary.
The procedure for checking and adjusting
alignment should be followed; name} checking king pin
inclination, camber, caster and toe-in, in the order
named.
A slight modification in obtaining the proper
caster and toe-in has been made and is outlined.
4
Back to Top
