Mikasa MVH-100 User manual

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SERVICE MANUAL
Version 2.0 (August 2022)
MIKASA REVERSIBLE PLATE
COMPACTOR MVH-R60H

410-00801
MVH-R60/100(120)/150
SERVICE MANUAL
REVERSIBLE SOIL COMPACTOR
○
R

C O N T E N T S
General Rules for Conducting Service
Disassembly and Reassembly
Hand Pump System
Periodical Inspection and Maintenance Work
1. Tools 1
2
2
3
4
4
8
9
19
21
29
26
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2. Inspection Procedure
3. Engine, Oil and V-belt
4.
5.
5-1.
5-2.
5-3.
5-4.
Operation System
Basic Machine
Vibration System
6.
7. Trouble Shooting
8. Wiring Diagram

1. Wrench 10mm 12mm 13mm 14mm 17mm 19mm 22mm 24mm 27mm
Offset wrench/Socket wrench/Adjustable wrench
2. Hexagonal wrench 3/16inch
5mm 8mm 10mm 14mm
3. Plier
4. External snap ring plier/Internal snap ring plier(bent type can be also used)
6. Metal and plastic hammers
7. Pulley puller
8. Sealing compound (Locktite 242, 271 and 638)
9. Liquid gasket
10. Pressing machine
1. Tools
5. Screwdriver, flat and cross
1

HondaGX120 RobinEH17HondaGX160 HondaGX200 RobinDY23(DS)
Shell Tellus #46 or equivalent
Engine Oil SAE10W-30
200
Table 1
MVH-150MVH-100(120) MVH-R60
Type
Mounted engine
Set rpm (min-1)3600
3600 3600
Fuel tank capacity (Liter) 2.5 3.6 3.6
Fuel consumption (L/h) 0.95
0.25 0.35 0.65
0.6 0.6 0.65
1.1 1.1
Engine oil capacity (L)
Vibrator oil capacity (L)
Lubrication oil in use
Vibrator oil replacement
interval (hours)
Size and quantity of belt RPF3320X1 RPF3320X1 RPF3320X1
Compaction Forward 0～25
0～25
3600
3.6
0.35
0.6
1.2
RPF3350X1
0～25
0～25
0～23
0～21 0～21
0～23
3200
3.2
0.35
0.9
1.0
RPF3340X1
0～25
0～25
Reverse
Hydraulic oil
2. INSPECTION PROCEDURE
3. Engine, Oil and V-belt
1.External appearance check
2.Operating test
2
Installation of parts (loosened screw, defective parts, etc.)
Damage on machine
Oil check (level and contamination)
Engine oil (SAE10W-30 when shipped) (See Table 1 for the capacity)
Vibrator
Hydraulic oil (forward and reverse)
V-belt for proper tension, damage, crack, hardening, etc.
Shock rubber for damage, crack, fatigue, hardening, etc.
Engine
Engine speed check (Max. set rpm and idling)
Traveling
Check for selection of forward/reverse travel.
Check for speed of forward/reverse travel.
Check for abnormal noise during operation.
(1)
(2)
(3)
a.
b.
c.
(4)
(5)
(1)
(2)
a.
b.
(3)

1.
2.
3.
4.
5.
6.
7.
Table of Tightening Torque (kgf-cm) Table 2
Screw diameter
Material
4T(SS41)
6-8T(S45C)
11T(SCM3)
In case counter
part is made from
aluminum
Hydraulic hose tightening torque: Screw size 1/4 380kgf-cm
4. RULES FOR CONDUCTING SERVICE WORK
3
In order to avoid deficient reassembly, know normal status of installation before removing or disasem-
bling any part. Level check or replacement of vibrator oil should be carried out on level ground.
Each time disassembly is made involving oil seal, gasket, packing, o-ring, lock washer or the like,be
sure to replace them with new ones.
Mating surfaces of vibrator case and compaction plate should be sealed with liquid gasket (Clean and
de-grease the mating surfaces thoroughly).
For tightening bolts and nuts, use the specified standard torque and bonding agent (Loctite or the like).
For such bolts and nuts that are not specified, see Table of Tightening Torque. (Before coating with
Loctite, clean the screw with gasoline or thinner.)
NOTE: All the screw in use with this machine are right handed.
Disassembly work should be conducted where it is free from dust.
Where bonding agent such as Loctite has been in use and screw is hard to loosen, heat it with torch
lamp or the like. Such heated bolt must be replaced with new one, which is of high-tension type as
specified.
Use proper tool in proper manner.
6mm
300～350
8mm
150
250
400
650～700
10mm
300
500
800
12mm
500
800
1,200
16mm
1,100
2,000
2,900
14mm
750
1,300
2,000
18mm
1,400
2,700
4,200
20mm
2,000
3,800
5,600
70
100
100
150
※For indication in SI Unit (International Unit System), use the conversion of 1kgf-cm=9.80665N-cm

Disassembled operation system
MVH-R60 CONTROL
5-1 OPEARTION SYSTEM (MVH-R60)
Disassembly
Disassembly
5. DISASSEMBLING / REASSEMBLING THE MVH-R60~150:
4
1.
2.
3.
4.
1.
2.
3.
Removing four bolts (28) shown in the drawing allows to remove the handle (1) from base.
For installing the handle assembly (1) to the base, first have the four bolts (28) tightened only lightly
which are fixing the handle bracket (R) and (L) (26, 27) in the developed drawing, and after adjusting
resistance in handle operation by means of double nut (12), retighten them securely.
Have the throttle lever resistance adjusted with double nut (46, 47) before fixing the throttle lever (39)
with socket head set screw (45). The nut tightening torque is 120kgf-cm.
Set rpm for high speed side of engine (See Table 1) should be adjusted by means of engine set screw
on the engine side.
Reassemble the system with its disassembly procedure reversed while observing below:
Whenever hydraulic hose has been disconnected, apply blank plug to it for preven-
tion of any dust from entering.
Remove hydraulic hose clamp (27), its retainer bolt (28) and nut (29). Removing
two bolts (21) and nuts (22) allows to remove grip (25) and hand pump (16) from
handle (1).
Removing two bolts (51) causes throttle body (37)
and throttle lever (39) to come off as an assembly.
Removing the double nut (46, 47) causes the throttle
lever to come off the throttle body. For removing
throttle lever off the machine, remove the throttle wire
(50) which has been screwed down to the engine.
Removing bolt (18) causes the travel lever (17) to
come off hand pump (16).
Remove hydraulic hose (26) from the elbow(35) of
vibrator shown in the drawing of disassembled vibra-
tor.
NOTE
！
50
21
(5)
(4)
(6)
6
56
28
26
1
34
35
36
24
47
46
43
45
43
44
39
49
48
53
52
51
40
37
42
43
38
41
70
（HOSE）
(
～
K1650)
31
(30)
29
27
26
(
～
K1650)
(K1650
～
S4900)
(S4901
～
)
11
10
9
8
13
10
11
9
12
3
3
2
14
54
50
(
～
S4900)
57
58
(S4901
～
)
(S4901
～
)
32
16
25
23
22
20
17
18
19
18
20

For VIBRO-COMPACTOR MODEL MVR-R60
Reassembling the governor lever assembly:
The governor lever assembly should be totally disassembled except for hollow setscrew (62) and nut M8
(63) (See Fig.A).
Reassembling Procedure:
(Fig.-A)
Disassembling the Governor Lever Assembly:
Parts not to disassemble.
Caution! channel
Photo D
20mm
Photo E
Photo B:
Properly done.
Photo C:
Correction required.
Insert inner part
Photo F
Place head in groove.
Photo G
Teeth should come to surface .
Photo H
Apply grease.
53
52
55
56
51
63
64
59
57
61
60
54
57
58
57
62
63
5
1.
2.
3.
4.
Insert the slider(53) into throttle body(51) with its groove coming in the back
(Photo D)
Install the outer governor wire (64). (Photo E)
(In case the end of inner governor wire should be bent, install inner and
outer wires together by taking measures of steps 3 and 4 below to get the
result as shown in Photo H.)
Insert inner part of governor wire(64) through throttle body(51)
(Photo F and G)
While pulling the end on inner wire which has come out of outer
part of governor wire, rotate it so that the gear teeth of slider is
visible. (Photo H)
<NOTE:1>
Disassembled hollow setscrew(62) and thin nut M8(63) should
be reassembled to be flush with each other as shown in Photo
B and C

Tooth face of throttle gear,
plain washer and o-ring should
be coated with grease.
Throttle body (51)
Belleville spring (58) x 2
Plain washer M10 (57)
Throttle lever (54)
Plain washer M10 (57)
Nut M10 (61)
Cap nut M10 (60)
Photo I :
Throttle gear, etc.
6
5.
6.
7.
＊
Assemble plain washer (57) and o-ring (56) to throttle gear (Photo I).
Assemble throttle gear(52) to throttle body(51) as
follows:
Assemble throttle lever(54) to throttle body(51) (Photo L and M)
Turn-in the hollow setscrew(59) to lock the throttle
lever to throttle gear.
a.
b.
＊
＊
Push-in the governor wire(inner) and shift the
slider(53) all the way to the back (Photo J).
Install with triangle mark of the throttle gear coming
on top (Photo K).
Plain washers should be installed facing each other.
Tightness of throttle lever should be adjusted with
nut M10 and cap nut M10.
To increase resistance in the movement of throttle
lever, add a plain washer M10 on the back end.
Tightening torque: 120kgf-cm
After assembling, throttle lever stops when it reaches top
position as shown in Photo M.
This is the position for the maximum engine rpm.
Photo K :
Triangle mark
Photo J :
Pull the inner part.
Photo L :
Assembling the lever
Photo M :
Hollow setscrew

7
35
38
26
27
25
37
36
33
34
32
28
13
12
19
16
15
14
13
18
17
30
1
15
1
1
2
7
3
4
21
20
8
4
3
7
5
9
10
24
23
22
Disassembled operation system
1.
2.
3.
4.
1.
2.
3.
＊
Removing two bolts(26) allows to remove the
assembly of grip(25), lever bracket(33) and
throttle lever(35).
Removing double nut(36, 37) causes throttle
lever(35) to come off the lever bracket(33).
To remove throttle lever from machine, remove
governor wire which has been crewed down to
engine.
Removing the bolt(13) allow to remove travel
lever(12) from hand pump(11).
Remove hydraulic hose(19) from the
connector(34) of vibrator shown in the drawing
of disassembled vibrator.
With the two handle root mounting double nuts (5) removed, taking off the bolt(2) allows to remove the
handle(1) from the base.
For installing the handle assembly(1) to the base,first lightly tighten the nut and bolt which have been
tightening the guard hook side of the machine and adjust the resistance of handle movement by means of
double nut(5) before retightening.
Resistance of handle movement should be adjusted with double nut(36,37)
Set rpm of the engine on the high speed end should be adjusted on the engine side by means of engine
setscrew.
Disassembly and reassembly procedures for MVH-150 is identical to those of MVH-100/120.
Reassembly
Reassembly should be conducted with the disassembling procedure reversed while observing below:
5-1 OPEARTION SYSTEM (MVH-100/120)
Disassembly
After removing hydraulic hose, apply blank cap to prevent any dust from entering.
Removing hose clamp(20), its mounting bolt(21), hand pump locking nut(18) and two stud
bolts (pump)(16) allows to remove the hand pump(11) from handle(1).
! NOTE:

1.
2.
3.
4.
5.
6.
1.
2.
3.
With four bolts (21) removed, take off the
outer belt cover (20).
Remove V-belt(16).
With bolt(15) removed, withdraw the clutch
(12).
With flat head screw(18) removed, take off
dust cover(17). (Base can be separated
from vibrating plate even without perform-
ing the steps 3 and 4.)
Remove hydraulic hose which has been
connected to vibrator.
Before removing the hydraulic
hose, remove mud or any other
smear from the joint area.
After removing four bolts which have been fixing isolation rubber to the base(1), lift the base assembly
upward. The vibrating plate assembly will be separated.
Coat the bolts and nuts for mounting the shock adsorber with Loctite 242.
All the mounting bolts for the basic machine should be coated with Loctite 242.
Installation of the clutch should be made with the belt groove coming to the engine side.
Reassembly
Reassembly should be conducted with the disassemby procedure reversed, while observing below:
5-2 BASIC MACHINE <Common to MVH-R60, 100 (120) and 150>
＊MVH-R60 is used as an example here.
Disassembly
37
38
36
35
25
24
39
3
4
5
2
23
50
52
51
6
1
1
12
14
15
13
7
8
47
48
28
29
28
29
26
30
33
27
45
44
46
44
41
43
42
44
41
43
1
19
18
17
20
21
16
31
R60 main body corollary exploded
8

1.
2.
3.
4.
4-1.
4-2.
4-3.
Remove any hydraulic hose connection.
With vibrator case mounting bolts(46,47)
removed, separator the vibrator case assembly
from vibrating plate(See Fig.1)
With four bolts(30) removed, remove cylinder(29).
Disassembling the piston:
With the vibrator case inverted upside down,
rotate gear in either direction to cause the
piston assembly(15) to be projected from the
vibrator case, before removing the expansion
stop ring(17) from inside of the piston.(Use a
bent nose type stop ring plier for this purpose.)
(See Fig.2)
Withdraw the piston.
With the contraction stop ring(14) removed,
take off bearing(13) and expansion stop
ring(17) which had been removed earlier(See
Fig.3).
5-3 VIBRATION SYSTEM
During disassembly and reassembly work, use care not damage any parts.
O-ring, oil seal, packing or the like must be relaced with new one.
Disassembly <Common to MVH-R60, 100 (120) and 150>
＊MVH-R60 is used as an example hereunder.
Fig.1
Fig.2
Fig.3
Piston
Piston
Gear Expansion
stop ring
Expansion stop ring
Contraction stop ring
Cylinder
Bearing
9

MVH-R60
VIBRATOR
24
25
26
23
2
5
7
5
3
6
38
2
21
19
2
52
53
51
46
1
22
27
37
39
40
44
43
21
20
21
4
8
9
5
9
5
2
12
1
1
16
15
14
13
17
35
32
31
30
34
33
29
47
10

4-4.
4-5.
4-6.
4-7.
4-8.
Remove seal cap(27).
Remove pendulums(19, 20) from each pendu-
lum shaft(See Fig.4)
Shift the pendulum(driven shaft side)(4) to one
side of the vibrator case(1) and remove
bearing(2) using the pulley puller, before
removing the pendulum assembly from the
vibrator case(See Fig.5).
Push out the stop ring(5) and gear(driven shaft
side) to one side and pull it out. If the gear is
hard to remove, use the press rather than
tapping on it with hammer.(See Fig.6)
Push the knock pin(12), with your finger or by
using a plastic hammer if it is sticky, which will
allow to pull out piston rod(11) from the pendu-
lum shaft(See Fig.7).
<MVH-R60>
4-4.
4-5.
4-6.
4-7.
4-8.
4-9.
Remove seal cap(25).
Remove pendulums(18) from each pendulum
shaft(See Fig.8)
With the driven shaft assembly pushed out to
the side opposite to pulley and the bearing(2)
taken out, remove the driven shaft assembly
from the vibrator case(See Fig.8).
Disassembling the driven shaft:
Remove four mounting bolts(10) and take out
bearing holder(8)(See Fig.9).
Remove four mounting bolts(44) and driven
gear(31).Tap on and remove parallel pin(12)
before pulling out piston rod(11) from driven
shaft(4)(See Fig.10).
With two contraction stop rings(5) removed,
remove 210o cam ring(7) from driven shaft(4)
before removing bearing(9) as well(See Fig.11).
<MVH-100 (120) AND 150>
Pendulum shaft (driven shaft side)
Bearing Fig.5
Fig.6
Fig.7
Gear
Pendulum shaft
(driven)
Piston rod
Knock pin
The side opposite to pulley
Driven shaft
2
8
7
7
9
9
55
4
25
18
10
11
31
12
Fig.8
Fig.9
Fig.10
Fig.11
Pendulums Fig.4
11

1.
2.
Models MVH-100(120) and MVH-150 are
different with respect to bearing(2),
pendulum(18), hex socket head bolt(19),
pendulum pulley(35), belt cover (lower)
(45) and mounting socket head bolt(46).
For MVH-150, three different types of
pendulum pulleys(35) are available
according to engine model.
12
22
23
24
21
2
5
30
5
3
6
2
36
18
19
19
18
31
8
9
12
5
2
41
42
43
1
20
35
44
7
10
18
19
18
4
19
40
42
43
34
32
33
27
28
29
26
47
48
16
15
14
13
17
11
2
5
9
25
46
45
37
39
38
MVH-100(120)/ 150
VIBRATOR

5-1.
5-2.
5-3.
5-4.
5-5.
With its mounting bolt(38) removed, pull out the
pendulum pully(35) from drive shaft. Have the key(6)
removed as well(See Fig.12).
With its four mounting bolts removed,remove the
bearing cover(21)(See Fig.12).
With its four mounting bolts removed, remove pendu-
lum (18) and push out the drive shaft assembly to
the bearing cover side before
removing the
bearing(See Fig.12).
As shown in Fig.13,remove upper stop ring(5) and
engage supports between the drive gear (30) and
inner surface of vibrator case. Press
the drive shaft
from top and remove drive
gear within the vibrator
case. The gear having been pressed-in over the
distance of about 2cm, its removal will be easy
beyond that point.
Pull out the drive shaft from vibrator case.
<Common to MVH-R60, 100 (120) AND 150>
＊MVH-100(120) is used as an example here.
Disassembling teh driving shaft side:
Fig.13
Press
Remove upper
contraction stop ring
2cm
Support
2
6
21
18
35
38
Fig.12
13

●
●
●
1.
2.
2-1.
2-2.
2-3.
2-4.
Vibrator case is to be supported by means of Jig B
with its belt side coming to bottom.
Have the key 10x8x19(6) and upper (opposite to belt
side) stop ring(5) engaged to drive shaft.
After piacing such assembly inside the vibrator case,
have the drive gear(7) (with its punched side coming
to top) and stop ring(5) engaged to halfway of the
drive shaft, in such order.
With the Jig A arranged as shown in Fig.15, push the
drive gear into drive shaft by means of press and
engage the lower stop ring(See Fig.16).
Press the bearing of opposite to belt
side(2) into drive shaft(See Fig.17).
Jigs to be used (3 types)
Before proceeding with reassembly, remove liquid
packing thoroughly from mating surface of vibrator
case and compaction plate. Clean and de-grease all
the other parts as well.
Coat the press-fit area with molybdenum grease.
Have both of the two bearings(2) inserted in the belt
side of vibrator case(1) (See Fig.14).
Bearings in use:
MVH-R60:
6206C4
MVH-100(120): 6307C4
MVH-150:
NJ307MC4
Within the vibrator case, press the drive gear(7) into
drive shaft(3) with its punched side coming to
top(Opposite to belt side) (See Fig.15).
REASSEMBLY
<Common to MVH-R60, 100 (120) AND 150>
Jig A Jig B Jig C
50
6
Φ70
80
80
10
30
5
Φ45
55
Re-assembling the driving shaft:
Fig.14
Driven shaft sideDrive shaft side
Belt side
Coat with
molybdenum grease.
Opposite to belt side
Fig.15
Top
Bottom
Jig A
Jig B
Press-in
Punched surface
on opposite
to belt side
Drive side
Coat with
molybdenum grease.
7
6
5
5
3
1
Drive side Drive side
2
2
5
5
Fig.16 Fig.17
14

1.
2.
3.
4.
5.
Insert 210ocam ring(7) to drive shaft(4). Pay
attention to the direction of flange face to
install.(See Fig.18)
Insert two bearing 6807(9) to driven shaft from its
each end and retain them with stop ring S-35(5).
Apply flat screw drive blade and lightly tap on it to
make sure that the stop ring has seated in the
groove properly.
Insert piston rod(11) to the driven shaft (See
Fig.20).
Press the parallel pin(12) via cam ring into piston
rod. After pressing it in,make sure that the parallel
pin dose not protrude from periphery of the cam
ring.(See Fig.21)
After inserting driven shaft gear(31) to cam
ring(7), lock it with four hex socket head bolts
6x20(44). Driven shaft gear(31) and cam ring
should be aligned with punch marks as shown in
Fig.23.
Bolts should be coated with Loctite 271.
Tightening torque: 180kgf-cm
Reassembling the driven shaft:
<MVH-100 (120) and 150>
15
Fig.20
Fig.22
Fig.24
Fig.23
Fig.21
Driven shaft side
Mating punch mark on
210o
cam ring
Mating punch mark on
driven shaft(31)
Loctite 271
Tightening torque:
180kgf-cm
6
x
20
Install
Apply molybdenum grease.
Press-in
4
7
12
411
Shifter piston side.
Pay attention to direction
of flange face.
Fig.18
Driven shaft side
Apply
molybdenum
grease
47
Coat with molybdenum grease.
Position of pressed-in
parallel pin.
Fig.19
Driven shaft
4
55
7
9
9
31 7

6.
7.
1.
2.
Install bearing holder(8) to driven shaft gear with
four hex socket head bolts 6x30(10). (See Fig.25)
Apply Loctite 271 to the bolts.
Tightening torque: 180kgf-cm
Fit the driven shaft assembly to vibrator case and
after aligning the punch marks of drive gear(30)
and driven gear(31), insert it to bearing(2). (See
Fig.26 and 27.)
Fit the piston rod to driven shaft, penetrate knock
pin through center hole and push the gear to the
middle of driven shaft before inserting bearings
from each side (See Fig.28).
Install the stop ring (See Fig.28)
!NOTE:
When inserting driven gear to driven shaft, make
sure to align the punch mark of gear with pendu-
lum installing position of pendulum shaft, before
placing the knock pin in the spiral groove.
Installing with the phase displaced by 180o, will
cause operation of forward and reverse travel to
be reversed. Aiso make sure that piston rod and
gear are installed in proper direction.
Be sure to apply molybdenum type extreme
pressure grease sufficiently to the bore of
pendulum shaft, piston rod, spiral portion of the
bore of gear, before assembling.
Reassembling the driven shaft:
<MVH-100 (120) and 150>
<MVH-R60>
16
Fig.25
Fig.26
Fig.27
Fig.28
Apply Locktite 271,
Tightening torque: 180kgf-cm
Driven gear (31)
Driven shaft assembl
Drive gear (30)
Mating punch marks
Pulley side
Align
Pulley side
Gear
Knock pin
Piston rod
Bearing
Driven shaft
6
x
20
6
x
30
10
8
2
2

1.
2.
3.
○
○
○
○
○
○
○
○
Have the expansion stop ring installed over the
piston rod and insert two bearings before retaining
it with contraction stop ring (See Fig.29). (When
using single shield type bearing, it should be
installed with its seal surface facing outward.)
Install USH packing to piston. (See Fig.30.)
(Push it in with your finger after coating with oil.)
Place the piston over the bearing and push the
assembly into vibrator case, before retaining it
with the expansion stop ring which had been
installed earlier (See Fig.31).
When using commercially available bearing,
use molybdenum extreme pressure type
grease to pack.
Apply grease to the area of piston rod where
bearing is inserted.
Make certain that piston has no scar or scratch.
Use care not to damage piston.
Install packing in proper direction.
To install the piston, either push it in with hand
or lightly tap on it with plastic hammer.
When installing the expansion stop ring, use
bent nose type plier and make sure that it has
seated properly in the groove.
After installation, make sure that the piston
rotates smoothly.
Reassembling the piston:
<Common to MVH-R60,MVH-100 (120) and 150>
17
Fig.29
Fig.30
Fig.31
Gontraction
stop ring
Gontraction
stop ring
Bearing
Seal surface
USH packing
Expansion
stop ring
Piston