John Deere 318 User Manual

Page 207

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DISASSEMBLE, INSPECT AND ASSEMBLE HYDRAULIC CONTROL
VALVE—THREE-SPOOL

A—Check Valve Plug (3

F—Cap

M—Bushing (3 used)

T—Plug (2 used, Version

used)

G—Shim (as required)

N—Washer (2 used)

Two only)

B—O-Ring (3 used)

H—O-Ring

O—Spacer (2 used)

U—Cap

C—Spring (3 used)

I—Spring

P—Spring (2 used)

V—Ball (2 used)

D—Poppet (3 used)

J—Poppet

Q—Washer (2 used)

W—Spring

E—Lock Nut (Version Three

K—Spools and Body

R—Snap Ring (2 used)

X—Detent

only)

L—O-Ring (6 used)

S—Cap (2 used)

Y—Spring

Versions One, Two and Three

NOTE: There are four versions of this valve.

Disassembly and assembly procedures may
vary slightly.

IMPORTANT: Spools and body are matched and

must be replaced as a unit. Spools
must be installed into the same
bores from which they were
removed for proper operation of
each function.

Always use new O-rings. Damaged
or used parts will leak.

NOTE: Note location and position of fittings and

linkages to aid in assembly.

Lubricate all O-rings with petroleum jelly
during assembly.

Inspect all parts for wear or damage. Replace as
necessary.

• Apply clean John Deere Low Viscosity HY-GARD

®

oil on all internal parts during assembly.

• Apply MPG-2

®

Multi-Purpose Polymer Grease on

springs (P and Y) and inside of caps (S and U).

• Tighten lock nut (E), if equipped, and caps (S and
U) to 31 N·m (23 lb-ft).

M78842

-UN

-24APR95

MX,15907005,10 -19-20APR95

Hydraulic Control Valve/Disassemble, Inspect and Assemble

TM1590 (17MAY95)

70-05-9

316, 318 & 420 Lawn and Garden Tractors

020895

70

05

9

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This manual is related to the following products:

316, 420