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GB
Maintenance
(2) Pipe cutter lubrication
The cutter feed screw and the rollers need to be oiled
once a day with spindle oil. Lack of oil not only makes
use more difficult, but detracts from the efficiency of
the machine.
Oil
(3) Carbon brushes with Automatic Cut-Off
This machine employs carbon brushes with an auto-
matic cut-off facility. If the working life of the brushes
is exceeded, safe operation of the machine is assured
as the motor will stop automatically.
Cambio de Escobillas:
1. Always change both carbon brushes at the same time
2. Ensure the motor is off before changing the
brushes.
3. Remove the side covers, turn the carbon brush caps
to the left using a minus screw driver and remove
the brushes.
Side cover
Fig. 29
Carbon brush cap
Fig. 30
(4) Keepoil system clean as follows
1. Drain oil and check for contamination.
2. Remove and clean scrap receiver, tank upper cover,
oil filter and strainer, and clean the oil tank.
If the oil system is kept clean, this will prolong the
working life of the gear-pump.
3. After cleaning the tank, put some sealing substance
on the drain plug to decrease any possibility of
leakage.
Scrap receiver
Pump
Oil line intake suction tube
Cutting oil system
1. Be sure oil flows freely. See that there is enough
oil in the tank and all oil lines are free from
obstruction.
2. If oil becomes discoloured or contaminated, drain
the tank and refill with fresh cutting oil.
3. Clean oil filter after every 8 to 12 hours of actual
use.
4. During thread cutting operations, small chips from
the threads will accumulate in the tank so efficient
cleaning is essential once a month to ensure proper
operation of threading machine.
(5) Hammer chuck structure and maintenance
LThe hammer chuck jaw incorporates 3 parts and
when the teeth on the chuck jaw inserts become worn
and fail to hold pipe or rod during threading, replace
the entire set of chuck jaw inserts.
Remove the hex socket set screw.
As shown in the illustration opposite, the hammer
chuck is fixed to main shaft by six socket head cap
screws.
36
Carriage
Oil filter
Tank upper
cover
Tank
Drain plug
Strainer
Fig. 31
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