Machine Maintenance:
6-2
Harris Research, Inc.
Chem-Dry
®
PowerHead
®
6. Once you have loosened the assembly, spin it off with your hands. If the cleaning
head is difficult to remove, you may use a 3/4” socket wrench on the exposed center
nut located under the gear box cover. To prevent the gear box from turning, remove
the gear box cover to expose the output shaft. The output shaft will accept a 5/8”
wrench just below the rotary union.
7. Wash the cleaning heads and shroud
assembly with a garden hose, being careful
not to wet the electric motor assembly.
8. Clean any lint buildup from the cleaning
heads and vacuum hoses (lint buildup will
restrict proper air flow and prolong drying
time).
Before cleaning the head assembly, place
the rubber stopper (available in the Harris
Service Kit)
inside the threaded bore of the
hub. This will prevent debris from entering
the solution lines and clogging the spray jets.
9. Clean off any debris that may have
accumulated on then gear box shaft or
the inside threaded bore of the hub (see
Figure 6-3).
10. Lubricate the felt vacuum seal on top of the
hub with a quality, 30 weight SAE motor oil
(see Figure 6-4). Also, put a few drops into
the hub threads.
11. Coat the shaft with TKX® All-Purpose
lubricant (HydraMaster P/N 000-087-006
– see Figure 6-5). Re-install the vacuum
head assembly onto the shaft by rotating it
counterclockwise.
An accumulation of debris in the gear box, if not removed, may damage the gear
box oil seal. This will result in loss of oil in the gear box. If the gear box is operated
without oil, severe damage may occur.
Figure 6-3.
Remove Debris
Figure 6-4.
Lubricate Felt
Vacuum Seal
Figure 6-5. Lubricate the Shaft
