MASSEY FERGUSON MF230 Shop Manual page 26

SERVICE MANUAL
Fig. 53-Install the ceramic collar (10) Into
retainer (11) with the three holes In collar
the Impeller.
shrouds are installed in correct locations
to assure proper cooling.
51. THERMOSTAT. The thermostat
is contained in a separate housing
behind the outlet elbow. The thermostat
should begin to open at 81
and be fully open at 93°C (200°F).
52. W ATER PUMP. Drain cooling
system, remove fan and belt, then unbolt
and remove water pump from rear hous·
ing. The rear housing can be unbolted
and removed after pump is ofi and lower
radiator hose is disconnected.
Remove pulley (2-Fig. 51) using a
puller attached to fan mounting hub.
Remove snap ring (3), then press shaft
and bearing (4) toward front out of im·
peller (12) and pump body (6).
1b assemble, install slinger (5) onto
short end of shaft (4), then press the
shaft and bearing assembly into body (6)
until bearing bottoms in bore. Install
snap l'ing (3). Coat outside
sealing compound, position gasket (8)
around seal, then install in housing with
carbon face toward impeller as shown in
Fig. 52. Install the rubber collar retainer
(11-Fig. 51) in bore of impeller (12), then
insert ceramic collar (10) as shown in
Fig. 53. Be sure side with three holes is
toward impeller. Pt·ess impeller onto
shaft with open side of blades out until
Rg. 55-lgnlllon timing marks on flywheel are visi­
rubber
ble through timing hole as shown.
toward
distance (A-Fig. 54) is 22.35-24.38 mm
(0.880-0.960 inch). Support shaft and
press pulley onto shaft until distance (B)
oc
(178 °F)
Fig. 56-Exploded view of the
distributor used. Gear (20) Is
driven by the teeth of gear on
engine camshaft.
I Cap
7
2. Rotor
3 Cover
4 Breaker pomts
6 Conden!M!r
6. Breaker plate
Snop nng
8 Cam assy
9 Spacer
10 Wmghts
I I
Llghl sprmg
12 Heavy spring
13 Distributor shan
14 Shouldered washer
16. Flat w
Needle bear�ng
16.
17 Housmg
of
18. Bushing
seal (9) with
19. Washor
20. Drive
21. Pln
Gasket
22
23. Tachometer drive gear
& Oat washer
24. Drive h.ou.sing
26. Adspler p>n
26. Angle dflve
27. 0Jotributor clamp
Fig. 54-Press Impeller onto
shaft until distance (A) from
rear surface of Impeller
gesket surface of body Is
22.35-24.38 mm (0.880.0.960
Inch). Press pulley on until
distance (8) from center of
groove to gasket surface
"V"
of pump Is 42.86 mm (1·11116
Inches).
..
her
17
gear ---
19
22� 21
Paragraphs
from center of pulley groove to mounting
surface of water pump is 42.86 mm
(1-11/16 inches). Water pump mounting
are
holes offset permitting installation
only one way.
IGNITION
All Gasoline Models
53. TIMING. Timing marks are
located on flywheel with a timing win­
dov.• on left side of engine block as shown
in Fig. 55. Initial (static) timing should
occur at 8 degrees BTDC. Maximum ad­
vance should be 27 degrees (crankshaft)
at 2200-2250 engine rpm; 28 degrees
(crankshaft) at 2425-2500 engine rpm.
These rpm ratings ru·e
ed high idle no-load governed speeds for
MF230 models (2200-2250 rpm); MF235
and MF245 models (2425-2500
ing order is 1-3-4-2. Distributor shaft
rotation is counterclockwise viewed from
to above (rotor end).
1b install distr1butor, be sure breaker
point gap is 0.43-0.56 mm (0.017-0.022
inch) which should provide dweU of66-72
degrees. Turn crankshaft slowly until
number one piston begins coming up on
compression stroke, then stop when 8
degree BTDC mark is visible in timing
hole (Fig. 55). Install distributor with
rotor pointing towru·d number one spark
plug. The distributor body should be
rotated until wire to coil is straight to
rear. Install distributor clamp finger
tight. Turn distributor clockwise until
2
3 24
2 5 26
J
27
51·5 3
t.he recommend­
rpmJ. Fir­
�:
27