Hydraulic/Power Tools

Question 1

How much horsepower does the HPU produce?

Answer 1

23HP at 3000 rpm.

Question 2

What is the max hydraulic output from the HPU?

Answer 2

Max 13gpm

Question 3

What is the maximum operating pressure of the HPU?

Answer 3

2400psi

Question 4

What size are the output/input hose ports of the HPU?

Answer 4

1/2” NPT

Question 5

What is the hydraulic oil capacity of the HPU? Fuel Capacity?

Answer 5

9 gallons both.

Question 6

HPU Supply hoses must have a minimum working pressure of ____psi.

Answer 6

3000psi.

Question 7

When operating the HPU in cold weather, allow hydraulic oil to warm up to ____ degrees or higher.

Answer 7

50 degrees F

Question 8

How often should the hydraulic oil be changed?

Answer 8

Every 250 hours of operation.

Question 9

What is the proper mixture of the HPU engine coolant?

Answer 9

50/50 ethylene glycol and fresh water. (distilled is preferred.)

Question 10

When starting the HPU, adjust speed to ____ RPM and let warm up for ___
minutes.

Answer 10

Per OP
1200
3-5min

Question 11

After HPU warms up, open the Hydraulic flow valve and increase to _____ rpm.

Answer 11

2000rpm per manual

3200rpm per OP

Question 12

Recommended operating temperature range for the hydraulic diver
tools is ____ to _____ F. Not to exceed _____ degrees.

Answer 12

80-120 not to exceed 140 degrees.

140 will reduce fluid life, 150 will damage equipment seals.

Question 13

Overheating problems can be controlled in most

situations by _____________ to effect heat exchange.

Answer 13

Placing excess hose in the water.

Question 14

The diver operated hydraulic cut off switch is located ____ from the tool, and is operated by the secondary diver.

Answer 14

6-8’

Question 15

When using the hydraulic impact wrench, the correct sockets are _____. Standard sockets are not designed to withstand hydraulic impact.

Answer 15

Black.

Question 16

Never use a grinding wheel rated at less than _____rpm.

Answer 16

6500rpm. (Grinder manual)

6000rpm (Dive school notes.)

Question 17

The hydraulic underwater GRINDER operates at a flow range of ___ to ___ gpm.

Answer 17

4-12

Question 18

CO23 Cut-off Saw uses a ____” cutting wheel. Never use a wheel over ____” in diameter.

Answer 18

10”

Question 19

While operating the chipping hammer, diver must wear _____ for sound protection. Maximum operating time per tier is ______ per each 24-hour period.

Answer 19

1/4 inch neoprene hood.

3 hours and 40 minutes.

Question 20

Hydraulic chainsaw uses 3 different bar lengths. What are they?

Answer 20

16” 20” and 24”

Question 21

What is the flow rate of the GR29 Hydraulic Grinder?

Answer 21

4-12gpm

Question 22

How much does the GR29 Grinder weigh?

Answer 22

15lbs

Question 23

What is the max RPM of the GR29 Grinder?

Answer 23

3200rpm @ 12gpm

Question 24

GR29 should rotate (clockwise/counter-clockwise.)

Answer 24

Counter-clockwise

Question 25

What is the flow rate of the CO23 Cutoff Saw?

Answer 25

10-15gpm

Question 26

At the beginning of each shift or when a new cutoff wheel has been installed, run the saw at operating speed for at least ____ before starting work.

Answer 26

1 minute

Question 27

CO23

Use only cutoff wheels that meet requirements
of _______.

Answer 27

ANSI 87.5.

Question 28

The hydraulic system should have a minimum of

___ micron filtration.

Answer 28

25

Question 29

The maximum rated speed of the

cutoff saw is ____ rpm.

Answer 29

3600

Question 30

The CO23 Cutoff Saw has a flow range of ___ gpm.

Answer 30

10-15