Oil Pump; Oil Pump - Clearance Between Rotors; Oil Pressure Regulation Valve; Internal Strainer - Kohler KD225 Workshop Manual

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LUBRICATION SYSTEM
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KD 225_315_350_400_440 Workshop Manual_cod. ED0053029330_1° ed_ rev. 00

Oil pump

Components:
1 Cover
2 Shaft
3 Key
4 Pin
5 Internal rotor
6 External rotor
Oil pump delivery at 3000 rpm is 5.8 l/min.

Oil pump - Clearance between rotors

Measure clearance as shown in the figure; the max. value is 0.13 mm;
wear limit 0.25 mm.

Oil pressure regulation valve

Components for KD 315 and KD 350:
1 Spring 2 Valve
Free length A of the spring is 27.50-27.75 mm.
Components for KD 225:
4 Ball 5 Spring
Free length A of the spring is 23.50-24.50 mm.
Components for KD 400-440:
7 Plunger 8 Spring
10 Cup 11 Snap ring
Free length A of the spring is 25,50÷25,75 mm.
Note: If A is 1 mm less than the given value, replace the valve.
Valve setting is not adjustable.

Internal strainer

The oil pick-up strainer is made of nylon 66. Its degree of filtration is
500 µm.
Dimensions (mm):
A = M16x1.5
B = 64
C = 102
D = 12
3 Plug
6 Plug
9 Washer