DRIVE SHAFT / PROPELLER SHAFT MODELS
SERVICE MANUAL NUMBER 24
Drive Shafts Modified to Shorter Lengths
The complete modified (shortened) drive shaft has to be ordered from the boat
manufacturer that installed the MerCruiser Power Package.
IMPORTANT: Dana Corporation - Spicer Regional Drive Shaft Centers will not shorten
replacement drive shafts for dealers or consumers.
If a boat manufacturer is currently having extension drive shafts modified, they must be
modified by one of Dana Corporation - Spicer Regional Drive Shaft Centers to maintain
MerCruiser warranty. The modified drive shaft must meet the following specifications.
•
•
•
•
U-joints aligned radially within 0° (± 1/2°).
U-joints greased, after welding, with Quicksilver U-Joint and Gimbal Bearing Grease.
Assembly balanced to within 1.5 oz-in. (0.01 Nm) to 4500 rpm.
Tube to have .005 in. (0.127 mm) to .010 in. (0.254 mm) interference fit with tube
yoke.
•
Tube must be straight and round within .015 in. (0.381 mm).
Installation
IMPORTANT: The following instructions are to be used if ONLY the drive shaft was
removed for service. Refer to appropriate sections for installation of other compo-
nents which require special alignment.
1.
Grease both drive shaft universal joints with Quicksilver U-Joint and Gimbal Bearing
Grease.
CAUTION
When attaching shaft in next step, BE SURE that the pilot on drive shaft flanges are
engaged in input shaft and output shaft flanges. Flanges MUST BE flush with each
other prior to tightening screws or screws may come loose during operation.
CAUTION
Failure to properly align shaft flanges with matching marks made on disassembly
may cause improperly aligned drive unit and extension drive shaft U-joint center-
lines resulting in a severe vibration problem.
Index
Page 8D-8
90-861327 OCTOBER 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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