Intermediate reduction drive (IRD) lubrication system - drain & refill - NAS

INTERMEDIATE REDUCTION DRIVE

41-2

ADJUSTMENTS

Intermediate reduction drive (IRD) 
lubrication system - drain & refill - NAS 

$% 41.25.06

Drain

1. Remove underbelly panel

 + 

 EXTERIOR FITTINGS, REPAIRS, 

Panel - underbelly.

2. Place container beneath IRD unit.

WARNING: Observe due care when draining 
gearbox fluid as the fluid can be very hot.

3. Clean area around filler/level and drain plugs.

4. Using LRT-41-021 remove filler plug and 

discard sealing washer.

5. Remove drain plug, discard sealing washer and 

allow oil to drain.

NOTE: The fluid should be drained with the 
transmission at normal operating temperature.

6. Fit new sealing washer and tighten drain plug to 

35 Nm (26 lbf.ft).

Refill

1. Fill with fluid until it just runs from filler/level 

hole. Allow sufficient time for fluid to flow and 
reach a common level in unit. 
 

 + 

 CAPACITIES, FLUIDS, 

LUBRICANTS AND SEALANTS, 
Lubrication.

2. Fit new sealing washer and tighten filler/level 

plug to 35 Nm (26 lbf.ft). 

3. Fit underbelly panel

 + 

 EXTERIOR FITTINGS, REPAIRS, 

Panel - underbelly.

M417853

LRT-41-021

M41 7687