John Deere 318 - Manual (Page 157)

15. Remove valve plate. Inspect the slots and ground
surfaces for nicks or wear. If the valve plate is scored or
the edges are not sharp, the valve plate and valve ring
both must be replaced.
M36839
-UN
-29AUG88
16. Remove and inspect hex drive assembly. Check
sides and slot for wear, grooves, or scoring. Pin (A)
should be tight and show no wear or damage.
17. Remove three springs (B).
18. Inspect springs for broken coils, wear, or damage.
M36840
-UN
-29AUG88
19. Remove the isolation manifold (four plates bonded
together). Check manifold surface, holes and edges for
nicks, or unusual wear. A polished pattern from the
rotation of the valve plate and commutator cover is
normal.
M36841
-UN
-29AUG88
20. Remove drive link. Check the four crowned surfaces
(A) for wear or scoring.
M36842
-UN
-29AUG88
MX,15906006,13 -19-01MAR95
MX,15906006,14 -19-01MAR95
MX,15906006,15 -19-01MAR95
MX,15906006,16 -19-01MAR95
Steering—318 and 420/Steering Valve
TM1590 (17MAY95)
60-06-7
316, 318 & 420 Lawn and Garden Tractors
020895
60
06
7