Removing Tappet; Removing Valve; Removing Thermostat Assembly; Removing Suction Control Valve (Scv) - Kubota D1803-CR-E4 Workshop Manual

4. ENGINE

5.18 Removing tappet

NOTE
• Mark the cylinder number to the tappets to
prevent interchanging.
1. Remove the tappets (1) from the crankcase (2).
(1) Tappet

5.19 Removing valve

NOTE
• Mark the cylinder number to the valves to
prevent interchanging.
Tools required
• Valve spring compressor
1. Remove the valve cap (6).
2. Push the valve spring (3) with the valve spring
retainer (4) by valve spring compressor and remove
the valve spring collets (5).
3. Remove the valve spring (3), valve spring retainer
(4) and valve (2).
4. Remove the valve stem seal (1).
(1) Valve stem seal
(2) Valve
(3) Valve spring
(4) Valve spring retainer
4-124
(2) Crankcase
(5) Valve spring collet
(6) Valve cap
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

5.20 Removing thermostat assembly

1. Remove the thermostat cover mounting screws,
and remove the thermostat cover (1).
(1) Thermostat cover
2. Remove the thermostat assembly (2).
(2) Thermostat assembly
5.21 Removing suction control valve
(SCV)
IMPORTANT
• For necessary or not of replacement, be sure to
decide based on the suction control valve (SCV)
related DTC decision flow (P0089, P0628 and
P0629) of diagnosis manual (DM).
• Do not take a break to prevent leaving the work
during replacement. Keep kit parts unopened
until just before replacement.
• Replacement parts shall not be dropped and
given an impact. Do not use the parts if
dropped.
Tools required
• Hexagon wrench (4 mm-square)
1. Remove the SCV mounting screws (2) with
hexagon wrench.
SERVICING
5. Disassembling
KiSC issued 12, 2018 A