CAMCORP HVP with Duroflow Blower - Manual (Page 35)

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Figure 3 Figure 4 Figure 1 Figure 2
Sheet Metal Screws
3. High speed shaft (worm shaft) removal:
C-Flange units 1.33 C.D. through 3.25 C.D.:
Use a small chisel to make a groove in the stamped steel cover opposite the motor flange. Pry off the cover. Remove
internal snap ring from housing bore. Remove motor flange. Using a plastic hammer, gently tap on the motor end of the
shaft to feed worm shaft assembly through housing and out.
3.75 C.D. through 6.00 C.D.:
Remove motor flange. Remove seal cage opposite motor face. Keep shims with seal cage for reassembly. Remove bearing
nut and washers from end opposite motor. Using a plastic hammer, gently tap the shaft on the motor end. Push shaft
assembly through housing until rear bearing outer race is free. Slide bearing inner-races off the shaft and remove worm
through front of housing. If a press is available, pressing the shaft out is preferable.
Basic units 1.33 C.D. through 3.25 C.D.:
Use a small chisel to make a groove in the stamped steel cover opposite the motor flange. Pry off the cover. Remove
internal snap ring from housing bore. Remove motor flange. Using a plastic hammer, gently tap on the extension end of
the shaft, to feed worm shaft assembly through housing and out. On units with C.D. of 1.33, 1.54, 2.63, and 3.00, front
bearing will remain in housing bore. Use soft tool and plastic hammer to tap bearing out extension end of housing from
rear. Be sure to tap on outer-race of bearing. If a press is available, pressing this bearing out is preferable.
3.75 C.D. through 6.00 C.D.:
Remove front and rear seal cages. Keep shims with seal cages for reassembly. Remove bearing nut and washers from
end opposite extension. Using a plastic hammer, gently tap the shaft on extension end. Push shaft assembly through
housing until rear bearing outer-race is free. Slide bearing inner-races off shaft. Reverse direction and push shaft through
extension end of housing and out. If a press is available, pressing the shaft out is preferable.
PARTS SERVICE
1. Housing – Clean inside of housing with kerosene or solvent and then dry.
2. Seal cages and end cover – Remove dirt from joint faces, wipe clean and dry.
3. Air vent – Wash in kerosene, blow clean and dry.
4. Seals – To replace seals without dismantling reducer refer to steps C through F below. To replace seals when the
entire reducer is dismantled and coupling hubs, sprockets, pulleys, pinions, keys, etc. have been removed the
following instructions apply:
Note: Replacement of all seals is recommended when a unit is disassembled. New seals will leak if the seal lips
are damaged or if seal’s rubbing surface on the shaft has been altered. Protect seal lips at all times. Clean the shaft
but do not use any abrasive material on the shaft surface polished by the seal.
A. Block up seal cages and press or drive out seal.
B. Remove old sealing compound from seal seat in cage if it is present. If a seal with rubber coating on the outside
diameter is used, no sealant is necessary. If no rubber coating is on seal outside diameter, coat seal cage bore
with adhesive sealant immediately before assembly.
To prevent possible damage to seal lips, do not reassemble seals until high speed and low speed shafts have
been reassembled to the housing. Then see steps E and F below.
C. See Figures 1 through 4 – To replace seals without dismantling reducer, proceed as follows:
Do not damage shaft; new seals will leak if seal contacting surface is marred. Use punch and place two or more
holes in steel casing of seal, Figure 1. (The steel casing may be rubber coated) Insert sheet metal screws, leaving
the heads sufficiently exposed so they can be pried up or grasped with pliers, Figure 2. Do not drill holes because
chips may get into the unit.
Disconnect all power before adjusting units