| ||
 |  |
|
HNJ571218 - Land Rover Series Gearbox Mainshaft Distance Sleeve
HNJ Engineering brings you a remanufactured equivalent of Land Rover Part No: 571218, Land Rover Series Gearbox Mainshaft Distance Sleeve.
This item is fitted to Series Land Rovers from 1954-1971. Also known as part number: 239706.
Manufactured from PB1 Phosphor Bronze i.a.w. BS1400, this material combines good ductility, corrosion resistance, wear resistance and high mechanical strength. PB1 finds typical use in heavy-load applications run at high speeds.
Key Features include: High Fatigue Strength, High Mechanical Strength & Wear Resistance, Good Resistance to impact loading, Excellent Seawater corrosion resistance.
Linear dimensions each side of the top hat have been machined slightly oversize (microns) to allow the end user to achieve the required end float between the bush and the thrust washers during assembly.
Note: Our components have 2 witness marks on the outer surface of the top hat.
The Land Rover Series Gearbox Mainshaft Distance Sleeve HNJ571218 retails at:
|
||||
£94.50
ea
ex VAT IN STOCK |
||||
Historical Material Grade Information
Some background information
Over the years we have collected a number of samples, both pattern and genuine Land Rover. Some of this type, and some the later Series 3 split type (FRC4076 & FRC4077).
Some of you will be aware that these bushes are known to fail at the joint of the top hat, and often come out in two pieces when rebuilding a gearbox.
Land Rover were actually aware of the premature failures in the 1960s and released a technical bulletin which called for an improved material grade on this part. Genuine parts with the improved material grade were to be identified by a witness line around the central flange.
Intrigued by this we sent our genuine items and pattern items off for analysis using a mass spectrometer.
The results speak for themselves, some of which are inclided below. Notice the high lead content in the pattern parts.
The condensed results showing a comparison are below:
________________________________________
Pattern Part No 1:
73.25% Copper
16.98% Lead
4.27% Zinc
3.94% Tin
0.51% Nickel
0.41% Antimony
0.33% Iron
________________________________________
Pattern Part No 2:
73.53% copper,
16.09% lead,
4.85% zinc,
3.79% tin,
0.48% nickel,
0.36% antimony,
0.22% iron
________________________________________
Genuine Part 1:
89.61% Copper
9.87% Tin
0.13% Nickel
0.12% Lead
________________________________________
Genuine Part 2:
91.13% Copper
8.3% Tin
0.32% Titanium
________________________________________
HNJ Engineering remanufacture this bush from Phosphor Bronze PB1 Phosphor Bronze i.a.w. BS1400.
