TM-9-2520-215-34

TM 9--2520--215--34

0080 00--2

OIL PRESSURE READINGS AND FUNCTIONAL TEST (TRANSMISSION

INSTALLED ON TEST STAND) – CONTINUED

0080 00

OIL PRESSURE READINGS – Continued

1. Check transmission oil level (LO 9--2350--256--12). Add or drain oil as required to establish correct oil level.

2. With shift selector control in neutral position, start engine and allow transmission to run until it reaches normal

operating temperature (approximately 200 degrees F).

CAUTION

Do not exceed 1020 rpm during reverse range operation.

3. During warm--up, input speed should be approximately 980 to 1020 rpm. Shift through all ranges several times to

ensure that hydraulic system is completely charged. Reduce input speed while making shifts from forward to

reverse range or from reverse to forward range.

4. While operating transmission during warm--up period, inspect transmission thoroughly for evidence of oil leakage

at all split lines and around all plugs and bolts. If leakage is present, check plugs and bolts for tightness. If

leakage continues, replace gaskets where required. Leakage of oil, in many cases, can cause faulty operation of

transmission.

5. Illustration in this work package shows oil pressure checkpoints, breather, manifold vacuum connections and oil

cooler connections. Pressure gages used during tests should be connected as follows:

Gage 0.0 to 60 psi – Check points 6 and 8.

Gage 0.0 to 160 psi – Check point 4.

Gage 0.0 to 200 psi – Check points 3, 5, 15, and 16.

Gage 0.0 to 400 psi – Check points 9, 10, 11, 12, 13, and 14.

NOTE

Gage 0.0 to 200 psi may be installed at checkpoints 10 or 12. Gage 0.0 to 300 psi may be

installed at checkpoints 3, 4, 5, 6, 8, 10, 12, 15, and 16.

TM-9-2520-215-34 - Page 452 of 508