ECHNICAL INFORMATION
PRODUCT
T
P 1/ 7
Models No.
Description
AC310H
Air Compressor
CONCEPT AND MAIN APPLICATIONS
H
This model has been launched as Makita first HP(high pressure) air compressor.
1,500W high output motor generates maximum 2.58MPa air flow performance to
exploit the full potential of HP pneumatic tools such as nailer, stapler, screwdriver
and impact driver.
L
W
Four couplers are on the front. The two couplers are for HP pneumatic tools,
the others are for RP (regular pressure) pneumatic tools.
Guard with seven bumpers is equipped to protect their couplers and body.
Dimensions: mm (")
Length (L) 476 (18-3/4)
Width (W)
Height (H)
507 (20)
375 (14-3/4)
Specification
Continuous Rating (W)
Voltage (V)
Current (A)
Cycle (Hz)
Max. Output (W)
Input
Output
120
13.0
7.0
60
50
---
875
875
1,500
1,500
220-240
1,800
Model No.
AC310H
Specifications
Max air pressure in Tank: Mpa (psi)
2.8 (410)
Air pressure in Tank when restarting: Mpa (psi)
2.3 (330)
for high pressure
Air pressure
0 ~ 2.58
through Coupler: Mpa
for regular pressure
0 ~ 0.91
Operating air pressure: MPa (psi)
Air flow performance: L/min at 0.75MPa
Horsepower: HP
0.98~2.26 (140 ~ 320)
90
2.5
Type
4-pole induction motor
1,700(60Hz) / 1,420(50Hz)
13
Motor
RPM: min-1
Rated amperage for North America: A
Continuous rating output: W
1,500
90
Noise: dB(A)
tested according to outdoor noise directive
Motor thermal overload protector
Insulation
Yes
by grounding
6.2 (1.6)
Tank capacity
Power supply cord: m (ft)
1.8 (5.9)
Weight according to EPTA procedure: kg (lbs)
36 (79.4)
Standard equipment
None of Standard equipment
Note: Standard equipment may vary by countries.
Optional accessories
Carrying tool
Air hose assembly
Hose reel
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P 3/ 7
Repair
[2] REPLACING
[2]-3. Unloading valve
1) Loosen M8 Ring nut with Spanner 17, then remove Pipe 8 from Elbow 8-R1/4. (Fig. 6)
Fig. 6
Pipe 8
Elbow 8-R1/4
M8 Ring nut
2) Loosen four M5x10 Pan head screws, then remove Front panel assembly from Frame complete. (Fig. 7)
Fig. 7
Frame complete
Front panel assy (RC1/4)
M5x10 Pan head screw
Spring washer 5
Flat washer 5
Pipe 8
3) Loosen two Ring nuts 6 with Spanner 13, then remove Pipe 6.
Loosen Screw and Nut (that are components of Switch assembly). Unloading valve can be removed. (Fig. 8)
Fig. 8
Switch assembly
Ring nut 6
Pipe 6
Screw
Unloading valve
Ring nut 6 (2pcs.)
Nut
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P 4/ 7
Repair
[2] REPLACING
[2]-4. Sheet ring H, Leaf spring H, Wearing H
DISASSEMBLING
1) After removing Side panel with Side panel cover, loosen two Ring nut 10 and remove Pipe 10. (Fig. 9)
Fig. 9
Pipe 10
Ring nut 10 (2pcs.)
2) Loosen nine 4x18 Tapping screws, then separate Motor cover A complete from Motor cover C. (Fig. 10)
Fig. 10
Motor cover A complete
Motor cover C
4x18 Tapping screws (9pcs.)
3) Lift up and slide Motor cover A complete along gray arrow direction so that the side of Cylinder head L
faces the reverse of rib of Motor cover A complete. Then remove Motor housing A complete by moving along
black arrow direction. (Fig. 11)
Fig. 11
side of
Cylinder
head L
rib of
Motor cover
A complete
The side of Cylinder head L faces
the reverse of rib of Motor cover A
complete
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P 5/ 7
Repair
[2] REPLACING
[2]-4. Sheet ring H, Leaf spring H, Wearing H (cont.)
DISASSEMBLING
4) Loosen two Ring nuts 8 with Spanner 17, then remove Pipe 8 from two Elbows 8-R1/4. (Fig. 12)
Fig. 12
Elbow 8-R1/4 (2pcs.)
Pipe 8
Ring nut 8 (2pcs.)
5) Loosen four M8x70 Hex socket head bolts with Hex wrench 9, then remove Cylinder H section from Crank case. (Fig. 13)
Note: When fastening Cylinder H section to Crank case, tighten M8x70 Hex socket head bolts to fastening torque 18 to
20 N.m.
Fig. 13
Cylinder H section
M8x70 Hex socket
head bolt (4pcs.)
Spring washer 8
(4pcs.)
Flat washer 8
(4pcs.)
Crank case
6) Disassemble Connecting rod H assembly. Sheet ring H, Leaf spring H and Wearing H can be replaced. (Fig. 14)
Fig. 14
Sheet ring H
Leaf spring H
Connecting rod assembly
Wearing H
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P 6/ 7
Repair
[2] REPLACING
[2]-4. Sheet ring H, Leaf spring H, Wearing H (cont.)
ASSEMBLING
1) Assemble Wearing H to Piston H. Wear ring H is not directional in assembling.
2) Insert Ring spring H in Sheet ring H so that the clearance of Ring spring H faces the opposite side against the clearance
of Sheet ring H. (Fig. 15)
3) Enlarge a width of the assembled part of Sheet ring H and Ring spring H slightly and fit the assembled part into
the groove of Piston H. (Fig. 16)
4) When Piston H of Connecting rod H assembly is at dead center upper point by turning Fan 195, assemble Cylinder H to
Crank case.
Note: Piston H is not supplied individually. It is supplied as Connecting rod H assembly.
Fig. 15
Fig. 16
The assembled part of
Sheet ring H and Ring spring H
Clearance of Ring spring H
Clearance of Sheet ring H
Sheet ring H
Groove of Piston
Wearing H
Ring spring H
[2]-5. Sheet ring L, Leaf spring L, Wearing L
DISASSEMBLING
1) Remove Pipe 8 from two Elbows. (Fig. 12)
2) Loosen four M6x90 Hex socket head bolts with Hex wrench 5, and then remove Cylinder L section from Crank case.
(Fig. 17)
3) Disassembling Connecting rod L assembly in the same manner mentioned for Connecting rod H assembly.
Fig. 17
Cylinder L section
M6x90 Hex socket head bolt
(4pcs.)
Flat washer 6 (4pcs.)
Spring washer 6
(4pcs.)
Crank case
ASSEMBLING
Take the disassembling step in reverse.
Note: 1) Tighten M6x90 Hex socket head bolt to the fastening torque 8 to 10 N.m.
2) Piston L is not supplied individually. It is supplied as Connecting rod L assembly.
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P 7/ 7
Wiring diaphragm
D-1
Note: Fix Lead wires in Motor cover with Band
Overhead view of Switch assembly
White or blue Black or brown
so as not to sag and interfere with Fan 195.
Green
Three lead wires from Motor section
A
Black
White or blue
White
B
ø6 Connector
Cord between Switch assembly
and Motor section
A
Bushing
Switch assembly
Cord clamp
Capacitor
Green
Polyolefin tube
Black or
brown
Motor section
Red
Motor cover
ø5 Connector
Black
B
Power supply cord
Thermal circuit breaker
Polyolefin tube
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