ZF SD-10 User manual

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Sept, 2011
SD-10/12 Descripon
and OWNERS Manual

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Owners Manual SD-10
Section
I Introduction
II Gear Identification
III Brief description
IV Operation
V Maintenance
VI Corrosion protection

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I Introduction
Customer’s Responsibility
The Customer/Operator is responsible to perform the necessary safety checks to ensure that
lubrication, cooling, maintenance and recommended practices are strictly followed for safe,
enjoyable operation.
All Transmission units are covered by a limited warranty.
Therefore: In respect to the handling of the transmission units the instructions stated in this
manual are to be strictly followed.
Maintenance programs described below are valid for the SD-10 transmission unit, not the
engine. For the intervals and procedures for maintenance of the engine, refer to the
operation manual and maintenance of the engine.
CAUTION
The manufacturer is not liable for any damages or losses caused by faulty installation, wrong
handling of the equipment and/or deficient maintenance. The Customer has to make sure,
that any external forces, as well as vibration caused by torsion and bending, are avoided. The
interaction between engine, shaft and propeller may lead to torsional vibration, producing a
hammering noise of gears and might damage the engine and/or transmission. The Supplier
is not liable for such torsional vibration inherent to the installation.

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I Introduction
This manual includes, among other things, the following four main chapters:
III Description
This part briefly describes function, operation and design of the SD 10 types.
IV Operation
This part describes the procedures for operation and all necessary safety measures.
V Maintenance
This part contains all maintenance and service tasks to be performed by the operator.
Important information related to technical reliability and operational safety are highlighted
by the identifying words as follows:
WARNING
Any procedure, practice, condition, statement etc., which is not strictly followed, could
result in injury or death of personnel.
VI Corrosion Protection
This part contains information on corrosion protection.

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II Gear Identification
Name Plate:
The name plate is fixed onto the transmission
MODEL SD 10 Transmission Type
iA= 2,16 Transmission ratio propeller rotation opposite engine rotation
iB= 2,16 Transmission ratio propeller rotation same to a engine rotation
SER. N. XXXXXXXX Transmission serial number
P/N. 3321 005 011 Transmission part number

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III Brief Description
The ZF SD-10 Sail Drive is a reliable and well designed piece of machinery.
They are of sturdy construction and utmost reliability.
Nevertheless the user should make a point of observing the following instructions for
installation, operation and maintenance.
Failure to do so, or unauthorized changes in the transmission, will preclude all and any
warranty claims.
A Service Manual is available from the manufacturer.

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IV Operation
1. General
All SD 10 transmissions have been submitted to a test run before shipment. During normal
operation, the transmission should only be shifted with the engine at idle speed. In
emergency cases it is also admissible to shift at higher speeds. Visual checks for leakage
should be made from time to time.
WARNING. Work on the transmission must only be performed with the engine and
propeller at standstill.
CAUTION. Before the first startup, the transmission must be filled with transmission fluid.
Start the engine only when the transmission is in neutral position.
CAUTION. Using the transmission with an insufficient oil level will damage the gears. An
excessive oil level may cause leakage at the shaft seals and the transmission breather,
and raise the operating temperature considerably.

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IV Operation
2. Sailing:
Boat sailing, moving in tow or anchoring. When the engine is off and the boat sails, moves in
tow or is anchored, the propeller may turn with the water current.
CAUTION. When the boat sails with engine switched off the shift position of the gearbox can be:
1) in neutral position and in this case the propeller is free to rotate.
2) in the opposite position of the travel direction to lock the propeller.
Note: do not put the shifting lever of the gearbox in forward position, otherwise the
transmission could be damaged!
WARNING. Do not work on the transmission when being towed, or anchoring in a river because
the propeller may rotate.
WARNING. When the engine runs idle, but the propeller shaft should not be driven (such as
when charging the battery with the generator), the shifting lever (see Fig. 2) must be held in
the neutral position (N) to prevent the boat from moving.

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IV Operation

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IV Operation
3. Gear shift operation
CAUTION. Make certain that control rod or cable is easily movable.
3.1 Lever travel: see Fig. 3
Minimum travel of gear shift lever (O-A=O-B) must be 35 mm (1.3/8") for outer pivot point
and 30 mm (1.3/16") for inner pivot point.
3.2 Lever position:
In neutral position perpendicular to control rod or cable. Gear shift lever can be fixed in any
position by means of clamping screw. Minimum distance between gear shift lever and cover
0.5 mm (0.02"). Opening or loosening of cover requires renewed adjustment (by specialized
personnel only).
3.3 Regular checks
are required to ensure the strict observance of item 3.1 and 3.2.

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IV Operation

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V MAINTENANCE
Maintenance programs described below are valid for the SD-10 transmission unit, not the
engine. For the intervals and procedures for maintenance of the engine, refer to the
operation manual and maintenance of the engine.
ROUTINE MAINTENACE

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V OIL LEVEL CHECK
1
2
1. Check the oil level by removing the dipstick.
Wipe the dipstick with a clean, lint-free cloth.
2. Insert the dipstick so that it rests on top of the threads into the case.
Remove the dipstick and check the fluid level on the
dipstick. The fluid level must be between the marks of minimum and
maximum on the dipstick. Add oil as necessary.
3. a = Maximum, b = Minimum, c = Upper edge of threaded hole
d = Rod
3
a
b
c
d

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V MAINTENANCE
SCHEDULED MAINTENANCE

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V OIL CHANGE
Un-screw the oil dipstick.
Prepare a suitable container to collect the fluid.
Remove the lower plug and drain the oil.
Dispose of used oil properly.

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V OIL CHANGE
Connect a hand oil pump onto the fitting of the oil
drain hole in the SD-10 drive. Be careful not to damage
the thread of the drain hole.
Using low pressure pump, add oil.
3L -SAE 15W-40
Replace the O-rings on the oil cap Sail drive, lubricate it and
prepare to reassemble it.

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V OIL CHANGE
Screw in the oil dipstick.
Remove the oil pump fitting and quickly
install the oil plug. Torque 10Nm.
Add oil at the dipstick hole to reach the
proper level as indicated on the dipstick.

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V REMOVING PROPELLER
Place a block of wood between the propeller
blade and the hull.
Using a 6mm Allen wrench, loosen and remove
the locking screw of the bullet.
Insert a suitable tool into the hole.
Loosen and remove the propeller spinner nut.

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V REMOVING PROPELLER
Remove the wooden block.
Remove the propeller.
If necessary, use a plastic hammer and gently
tap to remove.
Remove the propeller sleeve.

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V INSTALLING PROPELLER
Assemble the propeller shaft thrust
bearing sleeve. Install chamfered side
away from propeller.
Put some anti-corrosion grease on the
grooves of the propeller shaft.