The following information is applicable to all Esprit models fitted with a Renault type UN1 gearbox.
This information has been sourced from the appropriate Lotus Service manual.
It is imperative that the correct oil seals and correct length (and diameter) roll pins be used otherwise oil leaks will occur.
FE.6 - OUTPUT SHAFT SEAL REPLACEMENT
Tools Required:
Roll Pin Punch Set T000T0678
Output Shaft Seal Replacer T000T0681
The output shaft oil seals may be replaced without any dismantling of the transmission other than disconnecting the drive shafts.
However, the special construction of the seals necessitates the use of fitting tool T000T0681 in order to prevent damage during fitment.
Whenever replacing an oil seal, the '0' ring on the output shaft splines should also be replaced.
1. Remove rear luggage compartment floor/engine bay rear wall, for improved access.
2. Using punch set T000T0678, drive out from above the two concentric roll pins securing the drive shaft inboard joint to the transmission output shaft, and discard.
3. Taking note of the positions of the bolt head washer and bushing snubber washers, remove the stud securing the hub carrier to the top link.
Loosen the hub carrier lower stud. Pull the hub outwards sufficiently to draw the drive shaft off the output shaft splines.
4. Use oil seal extractor tool T000T0481 to extract the output shaft seal.
CAUTION: When using the tool on the right hand seal, it is most important to ensure that the puller claws locate under the lip of the seal, and not on the bearing shield fitted immediately behind the seal.
5. With the lip seal removed, hook out the '0' ring fitted at the base of the shaft splines.
Always fit a new '0' ring taking care not to damage the ring on the shaft splines.
6. Apply 'Wellseal' to the outside of a new oilseal and position on the transmission.
Use inserter tool T000T0681 with the appropriate collar, to drive the seal fully home.
The narrow (18mm) collar is for the right hand seal, and the wide (20mm) collar for the left hand seal.
7. Lubricate the lips of the seal with transmission oil, and fit the drive shaft onto the splines, with the roll pin holes aligned.
8. Refit the hub carrier top stud (coated with PBC grease) through the hub carrier and top link, correctly positioning the washers.
Torque tighten both upper and lower hub carrier studs only with the car at ride height, to 70Nm (50 lbf.ft).
9. Use the tapered tool in set T000T0678 to fully align the roll pin holes in the drive shaft and output shaft.
Insert the two NEW concentric roll pins from above, with their splits diametrically opposed and at 90 degrees to the shaft axis.
Progressively knock in each of the pins until flush with the surface.
Seal each end of the pins with Silastic or Loctite 587 sealant.
10. Refit luggage compartment floor/engine bay rear wall.
This information has been sourced from the appropriate Lotus Service manual.
It is imperative that the correct oil seals and correct length (and diameter) roll pins be used otherwise oil leaks will occur.
FE.6 - OUTPUT SHAFT SEAL REPLACEMENT
Tools Required:
Roll Pin Punch Set T000T0678
Output Shaft Seal Replacer T000T0681
The output shaft oil seals may be replaced without any dismantling of the transmission other than disconnecting the drive shafts.
However, the special construction of the seals necessitates the use of fitting tool T000T0681 in order to prevent damage during fitment.
Whenever replacing an oil seal, the '0' ring on the output shaft splines should also be replaced.
1. Remove rear luggage compartment floor/engine bay rear wall, for improved access.
2. Using punch set T000T0678, drive out from above the two concentric roll pins securing the drive shaft inboard joint to the transmission output shaft, and discard.
3. Taking note of the positions of the bolt head washer and bushing snubber washers, remove the stud securing the hub carrier to the top link.
Loosen the hub carrier lower stud. Pull the hub outwards sufficiently to draw the drive shaft off the output shaft splines.
4. Use oil seal extractor tool T000T0481 to extract the output shaft seal.
CAUTION: When using the tool on the right hand seal, it is most important to ensure that the puller claws locate under the lip of the seal, and not on the bearing shield fitted immediately behind the seal.
5. With the lip seal removed, hook out the '0' ring fitted at the base of the shaft splines.
Always fit a new '0' ring taking care not to damage the ring on the shaft splines.
6. Apply 'Wellseal' to the outside of a new oilseal and position on the transmission.
Use inserter tool T000T0681 with the appropriate collar, to drive the seal fully home.
The narrow (18mm) collar is for the right hand seal, and the wide (20mm) collar for the left hand seal.
7. Lubricate the lips of the seal with transmission oil, and fit the drive shaft onto the splines, with the roll pin holes aligned.
8. Refit the hub carrier top stud (coated with PBC grease) through the hub carrier and top link, correctly positioning the washers.
Torque tighten both upper and lower hub carrier studs only with the car at ride height, to 70Nm (50 lbf.ft).
9. Use the tapered tool in set T000T0678 to fully align the roll pin holes in the drive shaft and output shaft.
Insert the two NEW concentric roll pins from above, with their splits diametrically opposed and at 90 degrees to the shaft axis.
Progressively knock in each of the pins until flush with the surface.
Seal each end of the pins with Silastic or Loctite 587 sealant.
10. Refit luggage compartment floor/engine bay rear wall.