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Page Title:
Table 2-2. Troubleshooting - Continued |
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 TM 10-3930-634-34
Table 2-2. Troubleshooting -- Continued
Table 2-2 Troubleshooting Continued
MALFUNCTION
MALFUNCTION
TEST OR INSPECTION
TEST OR INSPECTION
CORRECTIVE ACTION
CORRECTIVE ACTION
22.
CONVERTER STALL SPEED LOW.
Step 2. Check for low main pressure.
Step l. Check for improperly adjusted throttle
Refer to 21 above.
linkage.
Step 3. Check for mechanical failure.
If improperly adjusted, adjust throttle
Disassemble and rebuild the transmission
linkage for full governor travel (para
27.
NO POWER TRANSMITTED IN ONE GEAR,
3-20).
Step 2. Check for improperly tuned engine.
Step 1. Check for slipping clutch by checking
If improperly tuned, tune engine (para
m a i n pressure (para 4-10) and by
3-12).
checking for worn piston seals.
23.
CONVERTER STALL SPEED HIGH.
Rebuild transmission if necessary (para
Step l. Check for low converter pressure.
4-9).
If pressure is low, overhaul transmission
Step 2. Check for improperly adjusted control
valves.
Step 2. Check for slipping clutches.
Adjust control valve linkage, if necessary
If clutches are slipping, rebuild transmis-
sion (para 4-9).
Step 3. Check for mechanical failure.
Step 3. Check for freewheeling stator.
D i s a s s e m b l e and rebuild transmission
If stator freewheeling, rebuild transmis-
sion (para 4-9).
28.
VEHICLE OPERATES IN ALL FORWARD
24.
TRANSMISSION OIL TEMPERATURE HIGH.
GEARS, BUT STALLS IN ALL REVERSE
Step 1. Check for low oil level.
GEARS.
If low, add oil to proper level. Refer to the
Check for forward clutch failure (will not
lubrication order.
release). Rebuild transmission (para 4 -9).
29.
VEHICLE OPERATES IN ALL REVERSE
Step 2. Check for high oil level.
GEARS, BUT STALLS IN ALL FORWARD
If oil level high, drain oil to proper level.
GEARS.
Step 3. Check for low water level in engine
Check for reverse clutch failure (will not
cooling system.
release). Rebuild transmission (para 4 -9).
Allow engine and transmission to cool,
30.
VEHICLE OPERATES IN FORWARD AND
Add coolant and check for leaks. Correct
REVERSE IN LOW GEAR, BUT STALLS IN
as required.
2ND, 3RD AND 4TH GEAR.
Step 4. Check for extended operation in ineffi-
Check for low clutch failure (will not re-
cient transmission range.
lease). Rebuild transmission (para 4 -9).
Operate unit in lower transmission range.
31.
VEHICLE OPERATES IN FORWARD AND
FORKLIFT TRUCK HAS POWER LOSS.
25.
REVERSE IN SECOND GEAR, BUT STALLS
Step 1, Check for low engine output.
IN LOW, 3RD AND 4TH GEAR.
Check engine tune. If necessary, tune en-
Check for 2nd clutch failure (will not re-
gine (para 3-12).
lease). Rebuilding transmission (para 4-9).
Step 2. Check for low main pressure.
32.
Refer to 21, above.
VEHICLE OPERATES IN FORWARD AND
Step 3. Check for improper converter function-
REVERSE IN 3RD GEAR, BUT STALLS IN
LOW, 2ND AND 4TH GEAR.
ing such as stator (or stators) locked,
c o n v e r t e r element interference, or
Check for 3rd clutch failure (will not re-
lease). Rebuild transmission (para 4-9).
noise at stall.
33.
and
Overhaul torque converter
VEHICLE OPERATES IN FORWARD AND
REVERSE IN 4TH GEAR, BUT STALLS IN
4-5).
LOW, 2ND AND 3RD GEAR.
26.
NO POWER TRANSMITTED IN ANY GEAR.
Check for fourth clutch failure (will not re-
Step 1. Check for proper positioning of control
lease). Rebuild transmission (para 4-9).
valves.
Adjust control valve linkage if necessary
2-4
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