9
PROBLEM
POSSIBLE CAUSE
SOLUTION
Pump operates, but does not
dispense any grease
Grease is too thick / too cold
Store grease in a warm place
Air pockets in grease
Shake the Grease Bucket (64) & manually force down the
Follower Plate (65) to remove air pockets
Dent in the Grease Bucket (64) restricting
movement of Follower Plate (65) leading to
formation of air pockets in the bucket and
inefficient working
Get the dent removed to ensure proper movement of
Follower Plate (65)
Pump not working / less
discharge
Inlet pressure is too less
Increase inlet pressure. It must be at least 30 PSI (2 BAR)
Nylon Slider (27) is jammed / overtight
1. Loosen both Screws (29) & remove Clip (28) . Check
for any build-up edge on Clip (28) & tighten it again.
Make sure the movement of Nylon Slider (27) is neither
very loose nor very tight
2. If needed, replace Nylon Slider (27). Also replace the
Paper Seal (24), Seat (25), Slider Guide (26) & Clip (28)
to ensure the best fitting
Piston / Piston Rod / Plunger jammed.
NOTE
Especially check Extension Rod (46),
Cylinder (51), Top Coupler (52), Slide Bush
(53) & Piston Rod (55) as shown in PARTS
DRAWING
1. Remove suction tube. Disconnect Air Motor Assembly
from Pumping Section by removing the upper two
Slotted Spring Pins (44) from Connector (45)
2. Supply input air to Air Motor. If it works properly
without the barrel assembly, then the problem lies with
the pumping section. Otherwise check the Air Motor
for smooth movement
3. After locating the faulty section, check the respective
Piston / Plunger & the associated washers & seals for
any overlap or wear & tear. Replace the defective parts
from Repair Kit
4. Ensure to replace the moving parts having close
tolerances (such as Piston & Cylinder along with Non
Return Springs & balls) as a SET to ensure the best
fitting
Pump continues to operate
even after the trigger of Grease
Control Valve (69) has been
released
Leakage in the assembly
Check all the connections to ensure they are air tight. Use
thread sealant
Check O rings & seals for damage. Replace the defective
parts from Repair Kit
Grease comes through the air
Exhaust Valve (23)
Grease leaks into the Air Motor
Check Slider Guide (38), O Ring (37), lower O Ring (11),
Seals (39) & Seal Support (40) for wear & tear. Replace the
damaged parts from Repair Kit
Air passes directly from inlet
to the outlet & pump does not
work
Nylon Slider (27) is jammed / overtight
1. Loosen both Screws (29) & remove Clip (28) . Check
for any build-up edge on Clip (28) & tighten it again.
Make sure the movement of Nylon Slider (27) is neither
very loose nor very tight
2. If needed, replace Nylon Slider (27). Also replace the
Paper Seal (24), Seat (25), Slider Guide (26) & Clip (28)
to ensure the best fitting
Discharge
suddenly
stopped
while the pump was running
Seals / O Rings Damage
Check all seals / O Rings & replace the damaged parts from
Repair Kit
Chip / Other foreign particles get clogged at
discharge coupler
Open the coupler, remove all foreign particles / chips &
reassemble properly
Clogging of Filter Tube (57)
Open Filter Tube (57), clean it & reassemble it properly
TROUBLESHOOTING
(Refer to Parts Drawing)
