Rover K Series 1.8 VVC, Рабочая тетрадь

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ENGINE K SERIES 1.8 VVC
Technical Academy
Page 20 of 28 01-34-RG-W-Ver:1
VVC Cylinder Head Data
Maximum warp 0.05mm
Cylinder head height: (New) 118.95 to 119.05mm
Reface limit 0.20mm
Valve spring colour code Blue
Valve spring free-length 47.6mm
Valve seat angle 45º
Valve seat width 1.5mm
Valve stem fitted height 38.93 to 39.84mm
Full information on cylinder head re-work, i.e., valve guide replacement, valve seat
refacing and the renewal of valve seat inserts can be found in the ‘K’ Series Engine
Overhaul Manual.
Hydraulic Control Unit (HCU)
If necessary, the HCU can be dismantled to check the condition of the piston and spool
valve bores for scoring or corrosion and the renewal of ‘O’ rings.
To dismantle the HCU, identify each solenoid to its fitted position, noting its angle at which
it is positioned relative to the HCU.
•
With the sleeve bolt removed, remove outer solenoid and then the inner solenoid.
•
Next, remove the spool valve, then the oil temperature transmitter, followed by
withdrawing the piston and rack assembly.
IMPORTANT: Always renew the ‘O’ ring seals.
Figure 21
•
Undo and remove the screw securing the piston to the rack.
•
Ease the piston from the rack, then carefully remove the piston seal, taking care not to
damage the machined edges of the piston seal groove.