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 616 of 894
TRUCK SERVICE MANUAL
SPRINGS
3.
Remove U-bolts, spring bumper and retainer or U-
bolt seat.
4.
Remove lubricators (not used on springs equipped
with rubber bushings.
5.
Remove nuts from spring shackle pins or bracket
pins.
6.
Slide spring off bracket pin and shackle pin.
7.
If spring is rubber bushed, bushing halves may be
removed from each side of spring and shackle eye.
Installation
NOTE:
Before reassembly, all shackle bolts, U-
bolts, etc.
should be cleaned and lubricated for
proper installation.
While the actual installation procedures will vary with
each spring type, the pivot end of spring is usually
fastened to frame bracket first.
Shackle end can then be
fastened by aligning shackle to other frame bracket.
When installing U-bolts for securing axles, do not final
tighten until springs have been placed under normal
load.
See TORQUE CHART for U-bolt torque
specifications.
Spring failures may occur at the center
bolt hole if U-bolts become loosened.
These bolts must
be kept tight and checked frequently.
Spring pins should
also be checked periodically.
Disassembly
1.
Clamp spring end in vise and remove old bushing
from spring eye.
2.
Reposition spring in vise so that assembly will be
clamped near center.
3.
If bolted type rebound clips are used, remove nuts,
bolts and spacers; where clinch type rebound clips
are used, bend tabs of clips up, being careful not to
break them.
Heating clips with torch will help avoid
breakage.
4.
Remove nut from spring center bolt.
5.
Release vise to permit spring leaves to separate.
Remove spring from vise and separate leaves from
center bolt.
Cleaning, Inspection and Repair
1.
Wash all parts in cleaning solvent or use steam
cleaning equipment to remove grease and scale.
Use a wire brush to hasten dirt removal.
NOTE:
Do not immerse rubber spring bushings in
cleaning solvent.
Use a non-petroleum base type
rubber lubricant on a clean cloth to wipe these parts
clean.
2.
Inspect all spring leaves for breakage and cracks.
Also compare arch of leaves with new leaves and if
leaves are flattened out, replace.
3.
Spring pins must be replaced if they are worn,
corroded or cracked.
4.
Spring eye bushing and spring shackle bushing must
also be replaced if defective.
5.
Check spring brackets for cracks or for wear around
mounting bolt or rivet holes.
Replace bracket if
damaged.
6.
Always use new center bolts at each overhaul.
Assembly
1.
Lightly lubricate spring leaves with a thin coat of
graphite grease. Place spring leaves in proper order
and align center bolt hole with a long drift.
2.
Compress spring leaves sufficiently for installing
center bolt and nut.
3.
Place spring assembly in vise and compress spring
leaves fully.
CAUTION:
When assembling spring leaves, be
careful to prevent physical injury to personnel.
The
use of special holding fixtures or "C" clamps for
holding spring leaves in place during assembly is
strongly recommended.
4.
Align spring leaves by tapping with hammer and
position rebound clips on spring.
If bolted type clips
are used, install spacers, bolts and nuts Tighten
enough to hold leaves in alignment but not enough to
restrict free movement.
If clinch type clips
609
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