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PAGE 12 —CDM1H CORE DRILL — OPERATION AND PARTS MANUAL — REV. #6 (09/08/10)
1. Hand-Grip – The CDM1H uses a plastic hand grip to
guard against possible electric shock. When drilling,
hold this grip firmly.
2. Reset Button – In the event of an overload press this
button. Allow a sufficient amount of time for the electric
motor (windings) to cool down before pressing the reset
button.
3. Electric Motor Brush Covers (2) – Insert tip of a flat
blade screwdriver into slot on brush cover, turn counter-
clockwise and remove cover to gain access to brushes.
4. Stock Release Adjustment Screw – This screw
provided tension for the trigger release spring. Adjust
the screw for the desire amount of spring tension.
5. Adjustable Stock – This stock slides back and forth
and is adjustable. It is provided for operator comfort.
6. Stock Release Lever – To release the stock and set
in position. Squeeze trigger lever and hold, pull back
and set in desired position, then release lever.
7. Rubber Shoulder Pad – Place this pad against your
shoulder or other parts of your body when drilling. Its
purpose is to reduce shock and vibration.
8. Drill Body –The electric motor and associated
components are contain inside the drill body.
9. AC Power Cord – Plug this 16 ft. (4.87 meters) power
cord into a 115 VAC grounded type receptacle. NEVER
remove the ground pin from the plug. This will defeat
the ground circuit and greatly increase the possibility
of electrical shock.
10. Detachable Rubber Handle – Insert the detachable
rubber handle into the desired port. Tighten securely.
11. Handle Port – The CDM1H has 3 handle ports.
12. Wrenches – These wrenches (27 mm and adjustable)
are used to install and remove the core drill bits.
13. Main Shaft – Attach core drill bit to this shaft.
14. Water Shut-off Valve – Turn this valve downward to let
water flow and up to stop.
15. Water Tube/Adapter – Connect this tube/adapter to a
water source. Typically a garden hose.
16. Grease Plug– Using a 5 mm hex wrench, remove this
plug to add lubrication grease. DO NOT over fill.
17. ON/OFF Trigger– Squeeze this trigger to start the drill,
and release to stop.
18. Core Drill Bit– Place bit onto main shaft and tighten
securely. Contact MQ sales department for the core
drill bit that best fits your application.
19. Adapter – 1-1/4" X 7 female to 18 mm male thread for wet
drilling bits from 1-1/2 inch diameter and above.
20. Adapter – M18 female to 5/8"-11 male.
Figure 3. CDM1H Components
CDM1H HAND-HELD CORE DRILL — COMPONENTS
1
2
3
4
6
7
9
8
11
10
14
11
16
17
15
13
12
27 MM
A
D
J
U
S
T
A
B
L
E
W
R
E
N
C
H
5
18
19
20