TSUM - 2-028 Lower Winch Function Check Part 4

TM 5-5420-279-23

TSUM - 2-028 Lower Winch Function Check Part 4

Part 4

All Maintainer Tasks

Fit pressure

gauge to TPPA on

Launch Fram e

W inch Control

Manifold

Operate joystick

to pay out

P m ore than 1450 psi

P less than

(10000 kPa)

1450 psi

but less than

Does

(10000 kPa)

3191 psi (22000 kPa)

gauge

read

P = 3191 psi

(22000 kPa)

Replace 3191 psi

Replace both

(22000 kPa) relief valve cartridge

Fit pressure

SV13 and SV14 on Launch

on Lunch Fram e W inch Control

gauge to TPP on

Fram e W inch Control

Manifold. See m aintenance

W inch Control

Manifold. See m aintenance

procedure 5-132,

Manifold

procedure 5-122

item 4

Does

Carry out Pum p Function

gauge read 653 psi

Check. See hydraulic trouble

(4500 kPa) or

shooting chapter 2 procedure

m ore

2-030

Yes

Replace

proportional valve PV1. on

Launch Fram e W inch Control

Manifold. See m aintenance

procedure 5-122

2-85