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Lotus Service Notes Section QJ
- To refit, reverse the removal procedure. Tighten the outlet pipe connection to 20 - 24 Nm, and the cylin-
der to pedal box fixings to 28 Nm. Bleed the hydraulic system of air, using the bleed nipple provided on
the slave cylinder.
Slave Cylinder
The slave cylinder is secured to the left hand side of the clutch housing by two M8 fixings into tapped holes.
The cylinder is protected from radiated heat from the front catalytic converter by an aluminium heat shield, part
of which may be bent back to allow improved access to the slave cylinder bleed nipple.
WARNING
Do not attempt to bleed the clutch hydraulic system when the catalytic converter is hot - spilled
hydraulic fluid could initiate a fire. Wait until the engine and converter is cool to the touch.
To remove the cylinder, first disconnect the pipe union and immediately seal the open end of the pipe and
the cylinder port. Release the two fixing bolts and withdraw the cylinder. If necessary, remover the cylinder
end protective rubber boot and pushrod, and use compressed air in the hydraulic port to expel the piston as-
sembly.
To re-assemble, coat the seals with lithium soap base glycol grease before inserting into the cylinder,
and then fitting the pushrod and boot. Secure with the two M8 bolts tightened to 12 Nm (9 lbf.ft), connect the
hydraulic line (15 Nm {11 lbf.ft}), and bleed the system of air, tightening the bleed nipple to 5 Nm (45 lbf.in).
Finally, ensure that the heat shield is returned to its original shape in order adequately to protect the slave
cylinder and hydraulic line.
Hydraulic Pipe
A 2-part rigid steel pipe is used to convey the hydraulic fluid from the master cylinder to the left hand front
corner of the engine bay. The pipe is routed down the LH 'A' post to run along the outside of the chassis LH
main siderail, within the composite sill member, and is supported, together with other pipes and hoses in foam
blocks. A flexible hose is used to connect the rear end of the chassis pipe to a short rigid pipe on the transmis-
sion, which connects to the slave cylinder.
Illustration TBA
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