3.3 Hydraulic oil
The System must be filled with one of the following anti-
foaming hydraulic oils, or an equivalent oil :
* Flush all hoses, fittings and the HYDRIVE tank with
hydraulic oil prior to filling the HYDRIVE tank with
hydraulic oil, using the following procedure :
1. Fill the HYDRIVE oil reservoir with suitable hydraulic oil
(see examples above).
2. Disconnect HYDRIVE return hose at the HYDRIVE control
valve block and provide a suitable container to collect
waste hydraulic oil. Properly dispose of waste hydraulic oil.
3. Thoroughly flush the entire system, refilling the HYDRI-
VE reservoir as necessary, until free of all contamina-
tion.
4. Reconnect the HYDRIVE return hose.
NOTICE
DO NOT ALLOW DEBRIS TO ENTER THE HYDRAU-
LIC SYSTEM DURING INSTALLATION OR SERIOUS
DAMAGE TO SYSTEM COMPONENTS MAY OCCUR.
3.4 Priming the system
BEFORE Engaging the PTO follow these steps :
1. Fill the tank with the recommended hydraulic oil, until
the oil reaches the black mark in the sight glass 6.
2. If the HYDRIVE is equipped with a selector valve, move
the valve to the "NEUTRAL" (Center or Off) Position.
3. Non-spill (dry-break) couplings must be fully
connected. Failure to do so can damage the hydraulic
motor seals.
4. Have a container of suitable hydraulic oil available to
refill the HYDRIVE reservoir as necessary. DO NOT
OVERFILL.
NOTE
Do not fill the HYDRIVE reservoir while the hydraulic
system is running. The level drops during operation
and returns to the full level when not in operation.
5. Make sure the driven cargo pump (or compressor) is
vented and cannot develop pressure.
NOTICE
THE FOLLOWING SYSTEM PRIMING INSTRUCTIONS
MUST BE FOLLOWED TO AVOID ENTRAPPING AIR.
1. Depress the clutch and engage the PTO. Release the
clutch slowly. After approximately 2 seconds depress
the clutch and disengage the PTO.
2. To insure that all system components, hoses and fittings
are completely filled with hydraulic oil, crack the HYDRI-
VE return connection at the HYDRIVE control valve
block (16a or b) allowing any trapped air to escape.
3. During the priming procedure, insure that the hydraulic
oil does not drop below the RED mark on the HYDRI-
VE sight glass (6).
4. Operate any system selector valves and directional
control valves to insure that all hoses and fittings are
free of air.
5. Repeat steps 1 through 4 until system is fully primed.
6. Secure the HYDRIVE control valve block return
connection.
Badly connected return line couplings will damage the hydraulic
motor seals. Ensure the outer sleeve is fully seated in the direction
shown.
Figure 7
Coupling connection
Ensure both halves of the couplings are clean.
WARNING
Hazardous machinery
can cause severe
personal injury
or property damage.
SET THE VEHICLE EMERGENCY BRAKE
BEFORE ENGAGING THE PTO.
9/16
NT 206-A00 10.11 Hydrive e
3. INSTALLATION (continued)
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