13
SERIES G
10. Maintenance
10.1. Prior To Any Maintenance Operations
10.1.1. De-energise the drive and secure against un-intentional switch on.
10.1.2. Wait until the unit has cooled down – Danger of skin burns & pressure build up.
10.2. Oil Plugs / Ventilator
10.2.1.
Prior to removing plugs, ensure that the unit has cooled sufficiently so that oil will not burn.
10.2.2. Place a container under the oil drain plug to be removed. Note: it is recommended that the oil should be
slightly warm, (40-50°C) when drained. (Cooler oil will be more difficult to drain correctly).
10.2.3.
Top ups or refills should be done through the ventilator position.
10.2.4. Remember to refit all plugs and torque tighten to Table M1 below.
10.2.5. Clean away any oil spillage.
10.3. Lubrication
10.3.1. Periodic inspection.
For Units fitted with dipstick or other level indicating device, check the oil level every 3000 hours or 6
months whichever is sooner and if necessary top up with the recommended type of lubricant.
10.3.2. Oil changes.
10.3.2.1. On all sizes regular oil changes are essential and the following factors should be used to
determine the frequency at which these are carried out.
a. Oil temperature – unit operating under load
b. Type of oil
c. Environment – humidity, dust, etc.
d. Operating conditions – shock, loading, etc.
10.3.2.2. At elevated temperatures the effective life of the oil is very much reduced. This is most
pronounced with oils containing fatty and EP additives. To prevent damage to the unit through
lubricant breakdown the oil should be renewed as detailed in Table M2.
Gear Unit
Plug Size
Tightening Torque
G 14 & 15
M22
65 Nm
G 16 & LARGER
M33
130 Nm
Table M1
Unit Operating
Temperature ºC
Mineral Oil CLP(CC) Type E
Synthetic Oil CLP(HC) Type H
75 or LESS
17000 HOURS or 3 YEARS
26000 HOURS or 3 YEARS
80
12000 HOURS or 3 YEARS
26000 HOURS or 3 YEARS
85
8500 HOURS or 3 YEARS
21000 HOURS or 3 YEARS
90
6000 HOURS or 2 YEARS
15000 HOURS or 3 YEARS
95
4200 HOURS or 17 MONTHS
10500 HOURS or 3 YEARS
100
3000 HOURS or 12 MONTHS
7500 HOURS or 2.5 YEARS
105
2100 HOURS or 8 MONTHS
6200 HOURS or 2 YEARS
110
1500 HOURS or 6 MONTHS
5200 HOURS or 18 MONTHS
NB: INITIAL FILL OF OIL SHOULD BE CHANGED IN A NEW GEAR UNIT AFTER 1000 HOURS
OPERATION OR ONE YEAR OR HALF THE ABOVE LIFE WHICHEVER IS THE SOONEST.
Table M2
CAUTION
STOP
CAUTION
Pinch Points
Watch Your Hands
DANGER
MAINTENANCE
