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 253 of 894
MOTOR TRUCK SERVICE MANUAL
COOLING SYSTEM
GENERAL
pushing back on each side at the bottom of the top
blade.
With the blades completely closed and shutter
control plunger pushed in against piston, rotate control
lever on shaft until control rod will index with hole in
lever.
Hold lever in this position and tighten sockethead
setscrews and clamp bolt nut.
Install cotter key in control
rod.
Recheck linkage between shutter and control to see
that all slack was removed.
Check to see that shutters close tightly by attempting to
insert a calling card between the blades.
If not closed
tightly, repeat adjustment procedure previously outlined.
Be certain shutter blades have sufficient end
clearance (not exceed 1/16").
End clearance can be
adjusted by loosening bolts on side of frame that retain
the bushing angles.
Move angle to obtain adequate
clear
ance and while holding in this position tighten retaining
bolts.
Full open position of shutter blades is at an angle of
approximately 70° (not 90°).
Maximum air flow is attained when blades are open from
60° to 70° (angular degrees).
LUBRICATION
Periodic inspection is advisable at which time nylon
blade bushings should be cleaned with light or
penetrating oil and blown out with air pressure.
DO NOT
oil at frequent intervals, only after cleaning or
reassembly, as normal lubricating oils tend to gather dirt
and dust.
Light oil on linkage periodically is desirable.
Periodically remove thermostat piston.
Clean piston thoroughly and lubricate with # 200 fluid or
silicone grease.
TROUBLE SHOOTING
PROBLEM
POSSIBLE CAUSE
REMEDY
Engine Running
1.
Coolant Level Too Low.
1.
Fill radiator and
Too Hot
check for leaks.
2.
Faulty Temperature Gauge.
2.
Replace gauge.
3.
Slack in Linkage.
3.
Adjust linkage.
4.
Faulty Engine Thermostat.
4.
Replace engine
thermostat.
5
Broken or Loose Fan Belt.
5
Replace or tighten
fan belt.
6
Faulty Water Pump.
6
Replace or repair
water pump.
7
Radiator Clogged.
7
Clean radiator.
8
Thermostat Dimensional
8
Remove shutter
Setting Incorrect.
control and adjust.
9
Incorrect Shutter Control
Thermostat Temperature Range.
9
Install correct
thermostat.
10 Shutters or Linkage Binding.
10 Free shutters and
linkage.
Engine Running
1
Faulty
nperature Gauge
1
Replace gauge.
Too Cold.
249
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