8
L4463 (
rev
.
c
)
5.0 PRODUCT DESCRIPTION
5.1 Introduction
The Enerpac ZA4T-Series air-powered bolting pump is
designed for use with hydraulic torque wrenches rated at
10,000 psi [690 bar] maximum operating pressure.
Features include:
• 2-button remote pendant with 20 ft [6.0 m] cord.
• Powerful 4.0 HP [3.0 kW] air motor.
• Durable steel chassis and reservoir with integral
lifting point.
• Corrosion resistant stainless steel roll cage.
• Two-stage pump design for fast system fills and
controlled flow at high pressures.
• Efficient Enerpac Z-Class pump element.
• Built-in air filter/regulator/lubricator assembly.
• 10,000 psi [690 bar] dial type hydraulic pressure
gauge.
• User-adjustable pressure relief valve allows quick
adjustment of torque wrench force.
See Figure 1 for a diagram of the pump’s major features
and components.
6.0 PREPARATION FOR USE
6.1 Hydraulic Reservoir Air Breather
The air breather parts are included separately in the
shipment. They must be installed prior to pump use as
described in the following steps. See Figure 2.
1. Remove the plastic shipping plug (A) from the
reservoir cover plate (save for future use).
2. Install adapter fitting (B) and air breather (C). Tighten
breather by hand to prevent damage.
A
B
C
Figure 2: Air Breather Installation
6.2 Hydraulic Reservoir Oil Level
The hydraulic reservoir is pre filled with oil at the factory.
However, the oil level should always be checked as a
precaution before running the pump. See Figure 3 and
refer to the following steps:
1. If compressed air hose was previously connected to
pump: Be certain that compressed air supply is shut
off and that air pressure gauge on filter/regulator
indicates zero (0) psi/bar. Be sure that the hydraulic
pressure gauge also indicates zero (0) psi/bar.
2. With the pump on a level surface, check the oil level
in the oil level sight glass at the front of the reservoir.
The reservoir is FULL when oil level is about halfway
between the top and bottom of the sight glass. Refer
to Figure 3.
3. If oil level is low, loosen and remove the reservoir
oil fill plug. Slowly add additional hydraulic oil until
the oil level
is FULL as described in step 2. DO NOT
OVERFILL.
NOTICE
For optimum performance and to prevent
possible invalidation of the product warranty, use only
Enerpac HF hydraulic oil.
4. Reinstall the reservoir oil fill plug.
5. Oil level may drop after hoses are connected and
pump is run. Recheck oil level and additional oil if
needed. Always check oil level with pump off and
hydraulic pressure relieved.
1
2
Key:
1. Oil Level Sight Glass
2. Drain Plug
3. Fill Plug
FULL
Figure 3: Hydraulic Reservoir
3
