SECTION 4 OPERATING INSTRUCTIONS
4-20 DD-29/31HF/38HF Vibratory Asphalt Compactors
TOWING THE MACHINE: MODELS DD-29
WARNING
!
Machine runaway condition could occur.
Always chock the drum and wheels of a disabled machine or hitch it to its
towing vehicle to prevent accidental movement while preparing the
machine for towing.
This is especially important if machine failure occurs on an incline.
To tow the machine, maximum 300 meters (984 feet), use the following
procedure.
CAUTION
!
Towing the compactor is limited to off the job site, onto the transporter,
off the transporter, and into the shop.
The machine used to tow the compactor should be heavier than or equal
to the weight of the compactor being towed.
Tow only on level ground or up a slight grade. Since the compactor
braking system has been disabled, the towing machine is the only means
of restraining the compactor while being towed.
Chock the disabled compactor whenever towing has stopped.
Refer to Transporting and Towing - Recommissioning in
Section 1, SAFETY before transporting the compactor.
In the event of an engine problem or other malfunction, or if the engine will not start, it may
become necessary to tow your compactor.
Towing the compactor requires bypassing the propulsion pump and releasing the
spring-applied brakes. Procedures to do so are described below.
NOTE: The propulsion pump is designed with a bypass function that
consists of two multi-function valve cartridges used to disengage the
propulsion system.
The spring-applied brake will always be applied when the engine is
running unless it is manually released.
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