Kohler KD62V12 — Thermostat HT and housing removal and installation
Repair & overhaul · Thermostat HT / housing
For the Kohler KD62V12, from the Kohler service manual.
Applies to: Kohler KD62V12, Kohler KD62V12 engine
Before you start
- Replace all sealings
- Vent coolant circuit at the end of installation
Procedure
- Drain HT coolant circuit.
- Remove two screws diametrically opposed; place guiding rods in their place.
- Remove remaining screws and screws 7.
- Remove thermostat housing; remove guiding rods.
- Remove thermostats; remove pipe with flange.
- Installation: assemble pipe and flange with O-rings; insert O-rings on water pump inlet.
- Position pipe assembly on water pump inlet; position thermostats in thermostat housing.
- Place guiding rods in place of two screws; place thermostat housing and screws.
- Remove guiding rods and place remaining screws.
- Screw thermostat housing and insert test point fitting; tighten to torque.
- Vent coolant circuit at the end.
Tools required
- Guiding rod M12x230 - Thermostat (x2) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- HT thermostat starts to open at 71 °C (160 °F); fully opened at 81 °C (178 °F)
Full service-parts list: Kohler KD62V12 →
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.