Getting back to pauls question about parachuting into Borneo - I would not have thought that was achievable in the 1940s. In 1944 there was only limited success parachuting Jeeps.
As to sizes & weights this from the Trux web site
Quote:
The following types were the standard types in British service.
Caterpillar D4 35 horse power weight 10,240lb (4.65 metric tons)
Caterpillar D6 55 horse power weight 16,650lb (7.55 metric tons)
Caterpillar D7 80 horse power weight 23,910lb (10.84 metric tons)
Caterpillar D8 120 horse power weight 34,170lb (15.50 metric tons)
All were used by the Royal Engineers with he D7 being the most common. Other types in use were
International TD9; International TD14
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Above weights relate to the Tractor only with no allowance for Dozer blade, Winch Etc.
I know that a few Clark Airbourne dozers were used by the british in Europe but were landed by glider Think the same was true in Borneo
Noel