John Deere 318 - Manual (Page 166)

IMPORTANT: The following procedure must be used
to minimize an out-of-round condition
between commutator ring and drive
plate. The commutator ring is
self-centering when the drive plate is
shimmed. Use DFMX2 Alignment
Shims.
26. Install metering assembly, with drive plate (A) up into
metering ring (B).
27. Install two DFMX2 Alignment Shims (C) each
between drive plate and metering ring 120˚ apart. (See
Section 299 for instructions to make shims.)
M36864
-UN
-29AUG88
28. Turn metering ring over on a flat surface and push
metering assembly down. Tighten 11 screws in several
steps and in the sequence shown to 1.4 N·m (12 lb-in.).
M36865
-UN
-29AUG88
MX,15906006,41 -19-10MAR95
MX,15906006,42 -19-01MAR95
Steering—318 and 420/Steering Valve
TM1590 (17MAY95)
60-06-16
316, 318 & 420 Lawn and Garden Tractors
020895
60
06
16