Groundsmaster 4000--D/4010--D Page 3 -- 25 Yanmar Diesel Engine
Coupler Removal (Fig. 21)
NOTE: The hydraulic pump assembly needs to be re-
moved from engine before coupler can be removed.
1. If engine is in machine, remove hydraulic pump as-
sembly from machine (see Piston (Traction) Pump Re-
moval in the Service and Repairs section of Chapter 4
-- Hydraulic System).
2. Remove flywheel plate and spring coupler from en-
gine using Figure 21 as a guide.
Coupler Instal lati on (Fig. 21)
1. Position spring coupler to engine flywheel and align
mounting holes. Make sure that coupling hub is away
from engine flywheel (Fig. 22).
2. Secure coupler to flywheel with eight (8) cap screws
and washers. Torque cap screws in a crossing pattern
from 29 to 33 ft--lb (40 to 44 N--m).
3. Position flywheel plate to engine. Secure flywheel
plate with eight (8) cap screws (item 1) and washers us-
ing a crossing pattern tightening procedure. Torque cap
screws in a crossing pattern from 28 to 32 ft--lb (38 to
43 N--m).
4. If engine is in machine, install hydraulic pump as-
sembly to machine (see Piston (Traction) Pump Installa-
tion in the Service and Repairs section of Chapter 4 --
Hydraulic System).
Figure 22
1. Coupler 2. Engine flywheel
Engine Side Hydraulic
Pump Side
1
2
Yanmar
Diesel Engine
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