Ariel JGI, Technical Manual

Page: 142 / 178

F
OR
M
ODELS
: JGI, JGM, JGN, JGP
AND
JGQ S
ECTION
5 - M
AINTENANCE
PAGE 5-26 9/08
the new sprocket and shaft key-slots. If the key is too thick, it can be polished
with emery cloth on a flat surface until it will slide into the slots for a snug fit. If
the key is too high, file of the top edge for a snug fit.
7. Install the new sprocket to the original measurement between the sprocket drive
face and the pump adapter flange face. When it is in the proper position, tighten
the set screw. If the original measurement is not available, position sprocket as
close as reasonably possible to the running position.
8. Install 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.
9. Re-install the pump onto the frame and tighten the cap screws. Check the align-
ment to crankshaft drive sprocket, with crankshaft centered in end play, using a
good straight edge and a good machinist rule to within 1/32 inch (1 mm). If not in
alignment, loosen the set screw and adjust the sprocket position as necessary.
Retighten the set screw when the sprocket is properly aligned.
10. Re-install and adjust the chain according to the instructions in “Chain Adjust-
ment” on page 5-24.
11. Re-install all piping (tubing) to the pump.
Force Feed Lubricator Chain Sprocket Replacement
1. Remove the cap screws from the drive chain eccentric adjustment cap and
rotate cap to loosen the chain.
2.
Drain Plug
Sight Glass
Lock Nut
Inlet
Header
Pump Plunger
Stroke Adjustment
Screw
Lubricator Oil
Fill Connection
Priming
Stem
Pump Inlet
from Header
Priming Pump
Connection
Pump Outlet to
Distribution Block
Lubricator Box
Sprocket
No. 204
Woodruff
Key
Setscrew
Sprocket
Face to Face
Thickness
Oil O-Ring
before
Assembly
Rupture Disc
Assembly
F
IGURE
5-20 F
ORCE
F
EED
L
UBRICATOR
C
HAIN
S
PROCKET
- T
YPICAL
Refer to the Figure.
3. After removing the
chain from the lube
sprocket, remove the
sprocket set screw and
sprocket. Detach all
tubing to the lubricator.
4. Remove the four
mounting bracket cap
screws and remove the
lubricator.
5. With the lubricator on
the bench, remove the
Woodruff Key from the
shaft and file the shaft
to remove any burrs
raised by the cup point
of the set screw. Install
a new O-ring.
6. Install a new No. 204
Woodruff Key after first
checking to make sure
the key will fit into the
new sprocket. If it is too
thick, it can be polished
with an emery cloth on