Ariel JGI, Technical Manual

Page: 141 / 178

F
OR
M
ODELS
: JGI, JGM, JGN, JGP
AND
JGQ S
ECTION
5 - M
AINTENANCE
9/08 PAGE 5-25
Chain Idler Sprocket Replacement - (Eccentric Adjustment Cap)
1.
Sprocket
Capscrew (2)
Plain
Washer
Through
Bolt
Self Lock
Nut
Stat-O-Seal-
Washer
Oil O-Ring Before
Assembly
F
IGURE
5-18 C
HAIN
I
DLER
S
PROCKET
(E
CCENTRIC
)
Eccentric
Adjustment
Cap
Remove the frame top cover (or chain
access cover for JGI). Remove the
two cap screws that hold the eccentric
adjustment cap to the end cover.
Rotate the eccentric cap to loosen the
chain. After dropping the chain off the
idler sprocket, the entire assembly can
be removed from the frame.
2. Remove the lock nut, cap screw,
sprocket, Stat-O-Seal washer and the
cap O-ring. Discard these items since
they must be replaced with new parts.
3. Reassemble all parts using a new cap
screw, Stat-O-Seal washer, sprocket,
and lock nut. Tighten the idler lock nut
to the recommended torque given in Table 1-12 on page 1-16.
4. Apply oil to and install a new O-ring on the eccentric adjustment cap.
5. Install the assembly and adjust the chain according to the instructions given in
“Chain Adjustment” on page 5-24.
Lube Oil Pump Chain Sprocket Replacement
1.
F
IGURE
5-19 L
UBE
O
IL
P
UMP
AND
S
PROCKET
Sprocket
No. 204
Woodruff
Key
Set Screws
Adapter
Pump
Gaskets
Remove the cap screws from the drive
chain eccentric adjustment cap and
rotate cap to loosen the chain. Remove
all piping (tubing) from the pump.
Remove fasteners from pump mounting
adaptor, and the pump with sprocket will
come free through the hole in the end
cover after the removing the chain from
the pump sprocket.
2. With a good machinist rule, measure the
distance from the sprocket drive face to
the pump mounting adaptor face to the
nearest 0.01 inch or 1/64 inch or 0.5 mm,
to provide for positioning the new
sprocket. Record this measurement for
reference.
3. With the oil pump on a bench, use an
Allen Wrench to remove the sprocket set
screw. Then, pull the sprocket from the
pump shaft.
4. Remove the No. 204 Woodruff key.
5. If the pump is to be separated from the adapter, such as when replacing the
pump, re-assemble using a new gasket. Before installing a gasket, apply an
antiseize lubricant to both sides or to the metal seating surfaces. This will help to
hold the gasket in place during assembly and aid in easy of removal.
6. Install a new No. 204 Woodruff key, after checking to be sure that it will fit into