|All TMP Type
12000 gearboxes have integral provision for Water
NOT USE COPPER BASED ALLOYS AS CONNECTORS, SO
DOING WILL RESULT IN MASSIVE CORROSION OF THE
The connectors have a 3/4" BSP thread.
Do not over-tighten, you will have to replace
them in the future, particularly if they are of
the Anodic type ( TM 12906). These should be
checked every season for corrosion.
You may also use steel / iron connectors.
Ensure that the threaded portion of the connector
does not protrude through the case into the water
cavity, a build up of rust will make them
impossible to remove without damaging the threads
in the case. Either connector can be used for in
/ out water flow on all but the offset boxes. On
these boxes use the lower connector as the in
(If wished the cooling can be linked into
the indirect Engine cooling system if the engine
heat-exchanger is large enough.)
All MK IV Boxes should be cooled.
Lightly loaded MK II boxes may be run
without cooling where the Max Revs do not exceed
The water cooling chamber should be drained
down when laying up for the winter, or anti-freeze
introduced into the system.