John Deere 318 - Manual (Page 113)

19. Install differential; if equipped with differential lock,
install shift rod assembly with differential.
Without Differential Lock
With Differential Lock
M36170
-UN
-22NOV89
M36169
-UN
-29AUG88
MX,15905015,26 -19-23FEB95
Differential/Assemble
TM1590 (17MAY95)
50-15-17
316, 318 & 420 Lawn and Garden Tractors
020895
50
15
17