ZF Repair Manual: ZF25A, ZF25, ZF45A, ZF45-1
<< Previous of 78 Next >>3.5.2 Neutral Safety Switch Check
To check for proper operation of the switch perform one
of the following tests:
A: Ohm meter
Connect the ohm meter leads to the terminal connec-
tion of the switch.
With the pin (item 1a Fig. 5-3) extended you should get
a reading, indicating a good switch.
Compressing the pin (item 1b Fig. 5-3) you should have
«O» reading,
B: 12 volt light
Connect the neutral safety switch with a light in series
to a 12 volt battery. The switch is good when the light
goes out when the center pin (item 1b Fig. 5-3) is com-
pressed.
3.6 HOUSING
3.6.1 Transmission housing halves
Using an adequate drift punch, top the locating pins
(item 1, Fig. 6-1a and 6-1b) out of the housing.
Loosen and remove all hex head bolts and lock
washers (item 2 and 3, Fig. 6-1b). Using a plastic ham-
mer slightly top the split line of the case halves to break
the seal. Then remove the input side of the housing.
3.6.2 Shafts and gears
Take the gear set out of the housing
.
Intermediate shaft (item 2, Fig. 6-2).
.
Input shaft (item 1, Fig. 6-2).
.
Output shaft (item 3, Fig. 6-2).
Check all gears, bearings and three piston rings on the
input shaft (item 4, Fig. 6-2) for signs of wear or failure.
If any of the gears are damaged or showing signs of ex-
cessive wear ZF HURTH MARINE recommends repla-
cing the complete gear set.
When tapered roller bearings on the input shaft need to
be replaced, the butting rings and needle bearings
should also be replaced. To check for correct clutch op-
eration, rotate the gears on the input shaft. If it is hard
to turn the gears, the clutch is probably damaged.
12
Repair Manual and Spare Parts List
Section 3
1
a
1
b
FIG. 5 - 3
Battery 12 V DC
Lamp 8.4 A
Neutral
position
Battery 12 V DC
Lamp 8.4 A
AorB
position
1
FIG. 6 - 1a
1
3
2
FIG. 6 - 1b
2
1
4
3
FIG. 6 - 2