Maintenance; Transmission Fluid; Capacity; Fluid Change - Universal M3-20A Operator's Manual

HBW TRANSMISSION
A
WARNING:
The position of the cover plate under-
neath the actuating lever is factory-adjusted to ensure
equal shift lever travel from neutral position to A and B.
If this side shift cover is removed or in any way tam-
pered with, the transmission warranty will be void.
Authorized Hurth personnel only may adjust or remove
this cover.
NOTE:
When installing the gearbox, make cenain that shifting
is not impeded by restricted movability of the Bowden cable
or rod linkage,
by unsuirabl:..,-'
positioned guide sheaves, too
small a bending radius, etc. A shift cable attachment is pro-
vided with each transmission
MAINTENANCE
Transmission Fluid
To ensure trouble-free operation of the gearbox, only use
Automatic Transmission Fluid (ATF). (Dexron II or III).
Capacity
Add the fluid quantity for the proper model transmission
to
the gearbox. After filling, check the fluid level with the dip-
stick. Adjust level as needed. Install the dipstick with the
sealing washer. operate unit, check fluid, check for leaks.
Transmission Fluid
Quantity
HBW50 0.29 Quarts (0 .. 30 Liters)
HBW 100
0.33 Quarts (0.35 Liters)
HBW 150 0.59 Quarts (0.56 Liters)
HBW 150V
1.10 Quarts (1.05 Liters)
HBW 250 1.84 Quarts (1.75 Liters)
Fluid Change
Change the fluid for the
first
time after about 50 hours of
operation, then every 250 operating hours or at least once a
year or when you change engine oiL When changing the
fluid, also check the gearbox cooling device and clean or
replace
it
as necessary.
NOTE:
When changing the fluid. take care
flot
to lose the
drain plug sealing
H'Qsher.
The drain plug will leak without
rhis sealing washel:
31
Checking the Bowden Cable or Rod Linkage
The Bowden cable or rod linkage should be checked at regu-
lar intervals. Check the neutral position of the operating lever
(on the control console) and the actuating lever (on the gear-
box). The minimum lever travel from the neutral position to
the operating positions (0 - A
=
0 - B) should be 35mm for
the outer and 30mm for the inner pivot point. Make certain
that these
minimum
values
arc
safely
reached. Check
the
cable or rod linkage for easy movahility and proper attach-
ment.
Propeller Shaft Alignment
The engine's transmission must be exactly aligned with the
propeller shaft. Misalignment will create excessive shaft and
bearing wear and can cause the transmission'5 rear seal to
leak fluid.
The shaft/transmission coupling alignment should be checked
periodically and always when the boat is being recommis-
sioned after winter storage.
Lay-up/Winterize
If the transmission is not used for periods of more than one
year, it should he completely filled with transmission fluid to
prevent corrosion. Protect the input shaft and the output
flange by means of an anticorrosive coating, as required.
HBW TRANSMISSION
SHAFT
COUPLING