Troubleshooting Guide - Macnaught T1000S-01 R1000T-01 Manual De Instrucciones

MAINTENANCE
Inspect your oil pump and associated hoses weekly for any
signs of damage. Replace any damaged or worn components.
DISASSEMBLY
The R500 and R1000 pumps have been designed to allow the air
motor assembly, and air seal (10) to be serviced without removing
the pump from the installation.
To service the Air Motor and Piston Rod Seal
without removing pump from the installation.
1) Disconnect the air supply and release oil line pressure.
2) To remove the air motor cap (1), insert two correct size steel
bars or pin punches into the holes located on the top of the air
motor cap (1). Hold both steel bars or pin punches in position.
Place a screw driver in between the two bars or punches and
unscrew the air motor cap anti-clockwise.
3) Using a strap pipe wrench, carefully unscrew and remove the
air motor housing (50)
4) Pull the air motor and piston rod assembly upwards to allow
easy access the air motor bolts (53)
5) Use a 6mm Allen key to unscrew the 4 air motor bolts (53)
6) Lift up the top adaptor (9) to expose the exhaust holes located
on the piston rod (41).
7) To retain the piston rod (41), insert the correct size steel bar or
pin punch into one of the exhaust holes on the piston rod (41).
8) Remove the three air valve screws (2), washers (3) & spacers
(4) from the air valve assembly, then remove air valve cap (49).
9) Unscrew the piston rod bolt (48), and remove the air valve
assy.
10) Remove the top adapter assembly (9,10,53,54,55,57) from the
piston rod.
11) Carefully remove the air seal (10), o'ring (57) and o'rings (55)
from the top adapter (9).
Note: Ensure you do not damage piston rod (41) during
Disassembly or Assembly.
12) Remove body (11) and silencer (40)
13) Clean and inspect all parts. Pay special attention to items (37)
and (38) as these are easily damaged. Replace any suspect, worn
or damaged components.
14) Assembly is the reversal of disassembly.
Note: Use Loctite 222 (or similar retaining compound) on the
piston rod bolt thread (48) and the three Allen screws (2) when re-
assembling the air motor.
TROUBLE SHOOTING GUIDE
TROUBLE CAUSE
Air motor operates 1) Drum or tank is empty.
without pressing gun
2) Foreign matter in footvalve (28).
trigger
Air motor operates but 1) Drum or tank is empty.
little or no oil flows.
2) Foreign matter in footvalve (28).
3) Faulty plunger (23) / piston (26) assembly.
Air continuously leaks 1) Piston rod seal (10) worn or damaged.
through exhaust.
2) Air valve (49) worn or damaged
3) O'ring (55) under the air motor bolts (53) are leaking.
Oil leaks through Oil seal (38) is worn or damaged.
exhaust
Pump is operating 1) Suction tube is sucking air.
erratically and has air in
2) Pump tube (20) or footvalve is sucking air.
the oil.
TG040 Issue 15 © 2019
COMPLETE PUMP DISASSEMBLY
1) Disconnect air supply and release oil line pressure.
2) Withdraw pump from the oil drum/tank. (Use a clean bench to
carry out maintenance).
3) Hold air motor housing firmly in a vice and carefully unscrew
and remove the pump tube (20) assembly.
Note: Care should be taken not damage air motor housing
during disassembly.
4) For air motor disassembly refer to previous section - "To service
the air motor and piston rod seal" and follow items 2 - 12.
5) Using a suitable size pin punch (1/8") remove the roll pin (36)
from the Piston rod (41).
6) Unscrew and remove the joining pin (35), valve housing (23)
and piston assembly from the piston rod (41).
7) Dismantle the valve housing (23).
8) Remove the piston rod (41) from the bottom adapter (15).
9a) R500 (See Parts Diagram) Remove circlip (12) from the bottom
adaptor (15) and remove oil seal assembly (14) and o-ring (13).
9b) R1000 (See Parts Diagram) Unscrew and remove the oil seal
assembly (14)
10) Remove foot valve assembly
11) Dismantle foot valve assembly.
PUMP ASSEMBLY
1) Clean and inspect all parts. Replace any, suspect, worn or
damaged parts.
2) Ensure that all parts have the correct orientation. If parts are
assembled upside down, the pump will not work. Check the parts
diagram for correct orientation.
Note: Use Loctite 222 (or similar retaining compound) on the
piston rod bolt thread (48)and the three air valve screws (2)
when re-assembling air motor.
Use Loctite 222 (or similar retaining compound) when
assembling the pump piston (26) to the valve housing(23).
Ensure correct orientation when fitting the seal carrier (14),
place the side with the oil seal (38) into the bottom adapter
first, be careful you do not damage the seal during assembly.
3) Assembly of the pump is a reversal of the disassembly procedure.
4) Fit the pump to your drum/tank and re-connect the oil hose and
air supply. Open dispensing nozzle to ensure correct operation.
REMEDY
1) Change drum or fill tank.
2) Remove footvalve, clean and reassemble.
1) Change drum or fill tank.
2) Remove footvalve, clean and reassemble.
3) Inspect plunger assembly replace any damaged or faulty parts.
1) Replace piston seal (10).
2) Replace air valve cap (49)
3) Replace damaged o'ring (55).
Replace oil seal assembly :-(for R500 order R500-3K), (for R1000 order
R1000-2K)
1) Re-seal suction tube. (Use either Teflon tape or a suitable thread sealant)
2) Re-seal pump tube (20) or footvalve (28). (Use either, Teflon tape or a
suitable thread sealant)
from the pump tube
(28) (20).
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