Maintenance And Repair - Lincoln FlowMaster A Serie Manual Del Usuario

5. Using a proper sized flat bladed screwdriver (see #4), in-
sert the screwdriver blade and engage the slot of the brass
adjustment screw. See Illustration 9.
Illustration 9
6. Turn the adjustment screw counter-clockwise to reduce
(clockwise to increase) the motor speed. The screw has no
stops and has a total travel of 15 turns. The minimum mo-
tor speed is 170 RPM. (Divide this speed by the gear ratio
to get the pump speed). See Illustration 10.
Illustration 10
7. The adjustment can be done with the pump stopped or
running. It is helpful to run the pump with the outlet line
detached to monitor pump outlet as the pump speed is ad-
justed. If the outlet line is to be detached for this purpose,
make sure to bleed pressure from the outlet line before
detaching.
8. When the adjustment is complete, reinstall the cover screw
using the Phillips screwdriver. This screw is sealed with a
white plastic washer. Make sure this plastic washer is in
place before tightening the cover screw.

Maintenance and Repair

Relieve pressure from the pump and supply lines before
servicing or repairing the pump, to reduce the risk of an injury
from injection, splashing fluid or moving parts.
Always use Lincoln Industrial parts for service and repair.
Form 403693
FlowMaster™ Rotary Driven Electric Pump
Crank Case Oil
Open Housing Cover (30) to check the oil after every 100
hours of operation. The crankcase should be filled to the
center of the pumpshaft. Change the oil after every 500 hours
of operation. Use SAE 10W30 motor oil in all units.
Disassembly Procedure (See illustration #12)
Tools Required:
- Hex Bit Socket Wrenches (3/8" square drive) with 3/8" hex,
5/16" hex, 5/32" hex, 1/4" hex
- 3/8" O.D. Steel Rod
- 12" Crescent Wrench
- Spanner Wrench (for 3/8" diameter tube, 1/8" pin)
- 1/2" to 3/8" square drive adapter
- Torque wrench (1/2" square drive, 0 - 50 ft-lb capacity)
- Torque wrench (3/8" square drive, 0 - 120 in-lb capacity)
- 1/4" nut driver
- Screwdriver (flat blade, 1/8" blade width)
1. Remove the electric motor (50) by removing the three jam
nuts (42) and unscrewing the mounting screws (51).
2. Remove the gear box assembly (43, 44 and 47) by remov-
ing the four mounting screws (46).
3. Remove four screws (48 or 67) and remove gearset(s) and
spacer, if applicable.
4. Remove the adapter shaft (41). This part is removed by
pulling it straight out of the pump shaft (37).
5. Remove the pump housing cover (30) and gasket (31).
Drain the crankcase oil from the open housing.
6. Remove the bearing cover (64).
7. Remove the pump shaft snap ring (62).
8. While supporting against the pump shaft seal (40), press the
pump shaft out of the assembly. Be sure to place a sup-
port shim under the crank assembly (1through 7) to prevent
binding while the shaft is pushed out.
9. Remove the two outlet pin nuts (32) from the housing (73).
10. Remove the pump subassembly (1 through 27) from the
pump housing (73). Pushing the subassembly up with
a wooden or plastic rod 3/4 O.D. against the check seat
housing (27) is helpful.
11. Remove the housing tube (56) from the pump housing (73)
by inserting a 3/8" rod through the inlet holes at the bottom
of the housing tube (56) and unscrewing it.
12. Remove the bronze bearing (52), the O-Ring (53) and the
backup washer (54) from the housing tube (56).
13. Remove the crankrod assembly (1 through 7) from the
pump by unscrewing the button head screws (11) and
then pulling out the wrist pin bushings (12).
14. Remove the check seat housing (27) from the
reciprocating tube (20). There is a 3/8 Allen head socket
in the throat of the check seat housing (27) to facilitate
removal.
15. Unscrew the wrist pin anchor (13) from the reciprocating
tube (20) and pull the plunger assembly (8 through 19)
from the tube.
16. Using a 1/2" wooden or plastic rod, push the cup seal (21)
and the pump cylinder (23) from the reciprocating
tube (20).
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