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CLUTCH AND BRAKE
1. You now have access to the clutch (37)
and the drive gear assembly (39).
Normally, the drive gear will remain in the
motor mount and can be removed by
pulling it straight out. The clutch will be
loose in the gear housing as the spring
behind the clutch forces it outward.
2. With these parts removed, wipe out all
the surrounding grease to remove any
metal chips that may be present. The
idler gear (27) and the eccentric shaft (26)
have been previously removed to
facilitate cleaning and allow repacking of
the needle bearings (29, 80) in the gear
housing and motor mount prior to
reassembly. Check idler gear pin (30) for
wear. This portion of the tool is to be
repacked about 50% full with Non-fluid
Oil No. K-55.
3. Check the teeth of the clutch (37) and the
drive gear assembly (39A) for wear.
Replace if necessary. Also, check the
needle bearing (38) in the center of the
drive gear for wear and make certain the
needles turn freely.
4. With a moderate amount of grease added,
a new clutch can be installed on the
spline of the Spiroid worm (28) and a new
drive gear assembly (39A) can be
installed into the motor mount.
5. Remove spacer sleeve subassembly (32,
33, 34, and 35). Disassemble by
grinding or filing the two stakes, if
necessary. Replace the brake (34).
Make certain that the flat surface of the
brake is facing the brake springs (33) and
insert the springs with the concave side
towards the washer (32). Stake the
spacer sleeve twice and replace the
spacer sleeve subassembly.
6. Assemble the clutch spring (36) and the
clutch (37) on the spline of the Spiroid
worm and press down to weld position.
Remove the weld handle subassembly
from the weld housing and insert it into
the gear housing in the sealing position.
The cam on the pressure eccentric will
be engaged with the groove of the clutch.
This will hold the clutch assembly in
place when reassembling the tool.
7. Add lubricant to the drive gear assembly
(39A) and insert it into the motor mount
(41). Also add lubricant to the idler gear
(27) and the eccentric shaft (26) then
insert them into the tool. Reassemble the
motor mount to the gear housing and
secure it with the three socket head cap
screws.
8. Refer to the illustration on page 14.
Examine the small dowel pin (50) that sits
in the groove in the contact stem (44), for
wear. Replace if necessary. Liberally
lubricate with MO-Lith No. 2. This will
also hold the pin in place during
reassembly. Remove the weld handle
from the tool and reassemble it into the
weld mechanism with the following
components. Inspect and replace the
parts as needed and add lubricant:
!
Pressure eccentric (66)
!
Lift tab (49)
!
Compression plate (43)
!
Die spring (45)
Shim (81)
!
Contact stem (44)
!
!
Dowel pin (50)
!
Cutter spring (47)
!
Weld housing (24)
Examine the bushings (64 and 65) in the
weld housing (24) for wear and replace as
required.
9. Check the valve components for cut
tubing or loose fittings, reassemble all
parts, being careful not to crimp or pinch
the tubing, and operationally test the tool.
16
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