F
OR
M
ODELS
: JGI, JGM, JGN, JGP
AND
JGQ
S
ECTION
5 - M
AINTENANCE
PAGE 5-24
result, is constantly lubricated. See Figure for the auxiliary end components and chain drive
system.
F
IGURE
5-17 C
HAIN
D
RIVE
S
YSTEM
- T
YPICAL
Chain Adjustment
For proper chain adjustment procedures, see engineering reference ER-74 on the Ariel web-
site at www.arielcorp.com, or contact the Ariel Response Center.
Chain and Sprocket Replacement
The chain should be replaced if the elongation exceeds 0.084 inches (2.13 mm) over a 10
pitch length. The section of chain to be measured should be stretched tight, in place, in the
compressor and measured with vernier calipers. A reading made outside of the rollers at 10
pitches should be added to a reading between the inside of the same rollers and then be
divided by two. If this calculation exceeds 3.834 inches (97.38 mm) for 3/8 pitch, the chain
should be replaced. Any sprocket showing any undercutting should be replaced.
Eccentric
Cap Screws
Plastic Dust
Plug
Chain
Force Feed Lubricator
Sprocket
Lube Oil
Pump Sprocket
Crankshaft
Sprocket
