John Deere 318 - Manual (Page 203)

DISASSEMBLE, INSPECT AND ASSEMBLE HYDRAULIC CONTROL
VALVE—SINGLE-SPOOL
A—Spool E—Spring H—Cap K—O-Ring
B—Body F—Spring Retainer I—Screw (2 used) L—Spring
C—O-Ring G—Screw J—Plug M—Poppet
D—Washer
IMPORTANT: Spool and body are matched and
must be replaced as a unit.
Always use new O-rings. Damaged
or used parts will leak.
NOTE: Note location and position of fittings and
linkage 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.
• Clean threads in end of spool (A) and on screw (G)
using Clean and Cure Primer. Apply thread lock and
sealer (medium strength) on threads of screw (G).
• Apply MPG-2 ® Multi-Purpose Polymer Grease on
spring (E) and inside of cap (H).
• Tighten screws (G and I) and plug (J) to
specifications.
TORQUE SPECIFICATIONS
Screws (G and I) . . . . . . . . . . . . . . . . . . . . . . 4 N·m (35 lb-in.)
Plug (J) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 N·m (23 lb-ft)
M78058
-UN
-24MAR95
MX,15907005,6 -19-25APR95
Hydraulic Control Valve/Disassemble, Inspect and Assemble
TM1590 (17MAY95)
70-05-5
316, 318 & 420 Lawn and Garden Tractors
020895
70
05
5