Valve Recessing - Kubota D1503-M Workshop Manual

03-M-E3B, 03-M-DI-E3B, 03-M-E3BG WSM

Valve Recessing

1. Clean the cylinder head surface, valve face and valve seat.
2. Insert the valve into the valve guide.
3. Measure the valve recessing with a depth gauge.
4. If the measurement exceeds the allowable limit, replace the
valve.
5. If it still exceeds the allowable limit after replacing the valve,
replace the cylinder head.
Factory
spec.
Valve recessing
Allowable
limit
(1) Cylinder Head Surface
S-75
DIESEL ENGINE
D1503-M
D1703-M
D1803-M
V2003-M
V2203-M 0.05 (protrusion) to
V2403-M 0.15 (recessing) mm
V2403-M-T 0.002 (protrusion) to
D1703-M-BG 0.0059 (recessing) in.
V2003-M-BG
V2003-M-T-BG
V2203-M-BG
V2403-M-BG
D1803-M-DI
0.65 to 0.85 mm
V2403-M-DI
0.026 to 0.033 in.
V2403-M-DI-T
D1503-M
D1703-M
D1803-M
V2003-M
V2203-M
V2403-M 0.40 (recessing) mm
V2403-M-T 0.016 (recessing) in.
D1703-M-BG
V2003-M-BG
V2003-M-T-BG
V2203-M-BG
V2403-M-BG
D1803-M-DI
V2403-M-DI –
V2403-M-DI-T
(A) Recessing
(B) Protrusion
KiSC issued 07, 2008 A
W10768800