Injection Pump Components And Disassembly; Injection Pump, Body, Plunger And Delivery Valve; Injection Pump Refitting - Kohler KD225 Workshop Manual

10
FUEL SYSTEM
105
106
107
- 54 -

Injection pump components and disassembly

1 Delivery union
2 Filler
3 Spring
4 Gasket
5 Valve
6 Gasket
7 Spring retainer
8 Spring
9 Spring plate
10 Rack
11 Plunger
12 Pin
A = Fuel outlet union
B = Fuel intake union
C = Fastening
D = Barrel
E = RH helix
Demount in compliance with the numeric order.
Plate 9 is held firm by pins 12. Lever up by inserting a tool between
the plate and the body of the pump.
The volume shifted by delivery valve 5 is 15
315-350 and 25 mm³ in the pump of KD 225 is 21 mm
KD 400/440

Injection pump, body, plunger and delivery valve

Components:
1 Delivery valve
2 Barrel
3 Plunger
4 Right helix
5 Delay notch
6 Pump body
7 Collar
Note: The injection pump installed in engines for small vehicles,
soundproof generating sets, EPA and KD 400-440 engines,
are characterised by the inclusion of a collar 1 which contribu-
tes to noise-reduction.

Injection pump refitting

The plunger is fitted with helix E facing towards the outlet union A;
if it is mistakenly fitted with the helix facing the intake coupling B the
injection pump no longer operates (there is no danger of engine ru-
naway); complete refitting following fig. 107.
KD 225_315_350_400_440 Workshop Manual_cod. ED0053029330_1° ed_ rev. 00
Dimensions mm:
A = 5.50 (nominal diam.) 225-315-350
A = 7,00 (nominal diam.) 400-440
A = 6,00 (nominal diam.) 315-350 EPA
B = 2.00 / 2.03
C = 1.50 /1.53
mm in the pump of KD
3
in the pump of
3