Exhaust Manifold - Mitsubishi 4DQ3 Service Manual

'Valve springs
Inspect each spring for cracks, and check it for square­
ness, free length and as-installed length against these
specifications:
Specifications
Item
Valve spring free length
Valve spring squareness
Load compress spring to
initial working len th
f
(4 3 mm (1.69 in.)
kg(lb)

Exhaust manifold

If the flange faces are warped by more than 0.2 mm
(0.0079 in.) when checke<;l as shown, grind them smooth
and flat. If any flange is found cracked, replace the
manifold.
Unit: mm (in.)
Repair
Standard
limit
48.85 47.6
(· 1 .92 32)
( l .874)
°
, max
1.5
19 ± 1
15
(41.9 ± 2.21)
(33.08)
Checking valve spring
Checking valve spring for squareness
Checking exhaust manifold flange surface for flatness