Land Rover engine 300 TDi. Manual — part 13
ENGINE
32
OVERHAUL
Oil pressure relief valve
1. Remove plug retaining oil pressure relief valve.
2. Withdraw spring and plunger.
Inspecting components
1. Check rotor clearances.
A - Outer rotor to housing = 0.025 to 0.075 mm
B - Inner rotor to outer rotor = 0.025 to 0.075
mm
C - Rotor end-float = 0.026 to 0.135 mm
2. Remove inner and outer rotors.
3. Check rotors for damage, wear and scoring.
4. Check oil pump cover for wear and scoring.
5. Check oil pressure relief valve spring free
length is 68.0 mm.
6. Check plunger and relief valve bore for wear
and scoring.
7. Clean all traces of sealant from oil pump cover
using solvent from kit GUG 705548GM.
8. Remove all traces of sealant from relief valve
plug threads in oil pump body.
CAUTION: Do not use a tap.
ENGINE
OVERHAUL
33
Oil pump and oil pressure relief valve - refit
Oil pump
1. Thoroughly clean timing belt rear cover,
remove all traces of gasket using suitable
gasket removal spray and a plastic scraper.
Remove all traces of sealant using solvent
from kit GUG 705548GM.
2. Ensure oil pump cover screw holes are clean
and dry.
3. Clean oil pump rotors and recess, lubricate
rotors and recess with engine oil.
CAUTION: Ensure alignment marks made
during dismantling are not erased.
4. Position inner and outer rotors in housing
ensuring that reference marks are aligned.
5. Apply bead of sealant from kit to outer edge of
oil pump cover, fit cover to housing ensuring
that reference marks are aligned.
6. Fit oil pump cover, fit and progressively tighten
7 screws.
7. Check that pump rotates freely.
Oil pressure relief valve
1. Thoroughly clean oil pressure relief valve
plunger, spring and relief valve bore then
lubricate components with engine oil.
2. Insert plunger and spring into bore.
3. Smear threads of relief valve plug with Loctite
577.
4. Fit plug and tighten to 17 Nm.
ENGINE
34
OVERHAUL
Timing belt rear cover - refit
1. Remove all traces of gasket material from
cylinder block using suitable gasket removal
spray and a plastic scraper.
2. Screw 2 slave guide studs into cylinder block.
3. Fit new gasket over guide studs.
4. Note position of oil pump drive flats on
crankshaft.
5. Rotate oil pump inner rotor to align with drive
flats on crankshaft and position timing belt rear
cover on guide studs.
6. Fit timing belt rear cover.
CAUTION: Do not remove guide studs at
this stage.
7. Fit 8 bolts of the correct length in positions
shown, remove guide studs and fit remaining 2
bolts.
ENGINE
OVERHAUL
35
8. Using sequence shown, tighten bolts to 25 Nm.
9. Fit oil pick-up pipe and sump.
10. Lubricate a new crankshaft front oil seal with
engine oil.
11. Fit oil seal using tool LRT-12-079.
12. Lubricate a new camshaft oil seal with engine
oil.
13. Fit oil seal using tool LRT-12-082.
14. Fit fuel injection pump.
15. Fit timing belt, tensioner and gears.
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