TM-9-2520-270-34

HYDROMECHANICAL CROSSDRIVE, TRANSMISSION HMPT 500 AND TRANSMISSlON CONTAINER ASSEMBLY

TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE

NOVEMBER 1984

TM-9-2520-270-34 - Page 761 of 933

TM 9-2520-270-34

REPAIR FIRST RANGE RELAY VALVE ASSEMBLY

DESCRIPTION

This task covers: Disassemble (page 4-427). Assemble (page 4-429).

INITIAL SETUP

Tools:

General mechanics tool kit:

automotive — (Item 33, App C)

Inside/outside indicator caliper —

(Item 41, App C)

Machinist’s vise – (Item 47, App C)

Micrometer caliper set – (Item 52, App C)

Small hole gage set – (item 72, App C)

Socket wrench adapter – (Item 75, App C)

Socket wrench attachment —

(Item 82, App C)

Socket wrench set – (Item 89, App C)

Torque wrench — (Item 100, App C)

DISASSEMBL E

1.

PLACE FIRST RANGE RELAY VALVE

ASSEMBLY (1) IN VISE.

Materials/Parts:

Transmission oil — (Item 12, App B)

Preformed packing (2)

Personnel Required:

Track Veh Rep 63H10

Equipment Conditions:

First range relay valve assembly on

workbench. See page 4-418.

2. REMOVE MACHINE THREAD PLUG (2).

a. Using 3/8-inch drive ratchet handle

and 1/4-inch socket wrench

attachment, remove plug (2).

b. Remove and discard preformed

packing (3).

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4-427