Troubleshooting-XTG 250-1A Transmission Removed from Vehicle

TM 9-2520-249-34&P

before removal from the vehicle, the transmission

binding or improper adjustment. Proper adjustment and

should be mounted on a test stand and checked. Refer

operation of brake, shift and throttle control linkage are

to chapter 9. Particular attention should be given to the

essential to efficient performance.

correct adjustments and proper oil level in every test.

4-5.

Troubleshooting-Before

Removal

and

4-7.

Troubleshooting Tests After Assembly

During Operation

All tests prescribed after assembly (para 8-11) may be

a. Preliminary Check. If the inspections in

applied to the transmission in which a malfunction is

paragraph 4-3 do not reveal the cause of failure, and the

suspected.

vehicle can be operated, further troubleshooting is

4-8.

Troubleshooting Table

necessary. Do not remove the transmission from the

a. Condensed Information.

vehicle until the causes of trouble listed in table 4-1,

(1) The

condensed

troubleshooting

following, are checked. Refer to paragraph 4-2 for the

information (table 4-1, which follows) will assist

purposes and scope of these troubleshooting

mechanics in diagnosing and correcting malfunctions.

procedures.

(2) Use table 4-1 in conjunction with tests

b. Check Engine and Oil.

To make a

(para 9-4) and adjustments (para 9-5).

thorough performance check, be sure the vehicle engine

b. Arrangement. In table 4-1, the steps listed

is properly tuned and that the transmission oil level is

following the malfunction indicate probable causes of

correct (refer to paragraph 1-11 and 9-4). Inspect again

trouble followed by the corrective action to the probable

for oil leaks after starting the engine.

cause.

4-6.

Troubleshooting-XTG 250-1A Transmission

Removed from Vehicle

When the malfunction has not been determined

Table 4-1. TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

TRANSMISSION

VEHICLE WILL NOT TRAVEL IN ANY RANGE.

Step 1. Check shift linkage for disconnection, bent, broken, sticking or out-of-adjustment.

Connect, repair, and/or adjust shift linkage (para 9- 5b.); refer to TM 9-2350-230-35/1.

Step 2. Check for low main oil pressure.

Normal main oil pressures are listed in table 1-1. Procedures for checking oil pressures

are listed in paragraph 9-3.

Step 3. Check for low oil level.

Add oil as required to bring oil level to proper level. (Refer to TM 9-2350-230-20-1.)

Step 4. Check for brakes holding.

Refer to paragraph 9-5a, for brake adjustment.

VEHICLE WILL NOT TRAVEL IN FIRST GEAR.

Check for low-range clutch or both steer clutches slipping.

Refer to repair of transmission (paras 6-3 and 8-11.

VEHICLE WILL NOT TRAVEL IN SECOND GEAR.

Check low-range clutch or both output clutches slipping.

Refer to repair of transmission (paras 6-3 and 8-11).

VEHICLE WILL NOT TRAVEL IN THIRD GEAR.

Check for slipping intermediate-range clutch or both output clutches slipping.

Refer to repair of transmission (paras 6-3 and 8-11).

VEHICLE WILL NOT TRAVEL IN FOURTH GEAR.

Check for slipping high-range clutch or both output clutches slipping.

Refer to repair of transmission (paras 6- 3 and 8-11).

4-2