RPC 30/40, 30/50

The RPC 30/40 30/50 is the smallest of the range of

reversible plate compactors. 140 – 200kg class plate.

Two sizes of base plates, 30/40, 400mm width.

30/50, 500mm width.

Petrol Honda or Diesel options, Hatz

Centrifugal force 30 kn.

Controls (Basic)

choke

Throttle

Controls and basic maintenance is covered in the

operators manual.

Drive is through a centrifugal clutch via a

drive belt.

Remove the circlip.

And dust washer.

Centre can now be

tapped out.

Shoes and springs can be

replaced.

A good guide to tension is

to be able to turn belt

through 90 degrees.

The hydraulic handle head assembly is

a simple rack and pinion type pump,

with one main seal and O rings,

Hydraulic Head internal parts

Hydraulic external parts

This is a machined drift tool which

is used to fit the bearing sleeve into

pump body.

Fit the bearing into the

head body as shown,

Fit seal to piston

rack shaft

This simple gauge is used to determine position

of piston rack pin on assembly

49mm

Place head body on to

the gauge.

Fit the two O rings to the pinion shaft.

Insert into the

body

Place the shaft in the

body and mesh with

pinion shaft.

The gauge will then allow

the correct positioning of

the two shafts.

Fit the two spring type

washers.

Secure with circlip

Fit O ring to guide.

Now fit guide into head.

Fit the bracket, and the four

bolts and secure.

Fit the adaptor

and seal.

Head is now complete

and ready to be fitted

to machine.

Note the position of

the flats on the shaft.

Operating Principle

The RPC 30/40 30/50 gearbox contains two shafts gears and weights,

The shafts turn in bearings at each end of the shafts housed in the

casing,

The non Pulley shaft has a gear pressed onto it in a permanent position

and located on a keyway.

The Pulley shaft has a gear which slides on the shaft, this to enable the

direction of the compactor to be changed.

On the inside of this same shaft is a plunger which is moved in and out

by hydraulic oil. The oil to this plunger is provided from a reservoir

located in the handle assembly of the machine. The oil from the

reservoir is supplied through a flexible hose and then enters the plunger

housing to operate the plunger by means of hydraulic pressure.

RPC GEARBOX ASSEMBLY INSTRUCTIONS

Before assembly all items need to be clean

In normal assembly all items are cleaned by a

hot wash

Fitting of gear to non pulley shaft.

The gear is pressed onto the shaft and located

by the keyway,

Note position of

white

timing dot on gear

This must be at

right

hand side with

keyway

At front.

Note position of oil

plug.

This is used as a

reference point.

Press first bearing into casing as

shown.

Fitted and secured to 35nm

When pressing the bearing in to the gearbox casing,

the end cap is used to determine the correct distance.

Press inner bearing

races onto shaft.

Fit the shaft to the

casing as shown, note

position of gear.

Fit remaining bearing

Cover

sleeve

Circlip

Plunger assembly

Bearings

Bolt 10nm

Use

loctite.

Plunger assembly

Place circlip over

assy

Press bearings and cover sleeve on.

Fit circlip into

bearing cap

Fit bearing to piston

shaft.

Take note of position

keyway facing, at the

top of the shaft,

And slot at bottom of

shaft,

Slide circlip up

to bearing.

But not fitted

into groove at

this stage.

Now fit

bearing

sleeve.

Also the spacer

Insert plunger

assembly into

piston shaft

The dowel pin now is fitted through the slot in the

shaft and locates into the hole in the plunger cap.

Location

hole

This shows correct

position of dowel pin

when fitted to shaft

through plunger

assembly.

Dowel pin should

protrude equal length

either side of shaft.

The next stage is very critical to

the timing of the gears,

Begin with the helical gear as

below with the timing dot to the

left and at 11 o clock , in relation to

position.

Place the piston

shaft in the gear,

Note that the Keyway

and bolt holes face

towards you.

Keyway

Weight bolt holes

With the dowel pin on

the bottom of the slot,

and holding the shaft,

carefully lift the helical

gear up the shaft,

turning the gear at the

same time.

The helical gear should

be lifted up sharply so

as to locate on the

bearing,

Once this is done, note

position of the timing

mark.

Gear held by bearing

Now very carefully turn the

whole shaft through 180

degrees,

Still holding the shaft

continue to turn the

helical gear until the

plunger drops, you will

note this will happen

quite suddenly.

The remaining inner

bearing race now

needs to be fitted,

Great care must be

taken not to disturb

the gear on the

shaft during fitting.

Insert complete shaft into casing as

shown, first from left to right.

Then pass

through carefully

to left hand side

of casing.

Note, now the position of the gear

(flush against the casing)

Now from the opposite end of the gear

shaft , gently tap the shaft with soft

type hammer until the

bearing is almost flush with the

helical gear.

Now fit circlip, (already on shaft) to groove as shown,

When bearing has located into helical gear to allow this.

Now tap shaft remaining distance until gear and bearing

are flush up to circlip to fully secure.

Fit bearing to casing at

end of shaft where

plunger locates.

Now fit shaft into bearing and

at the same time align the two

timing marks,

These must be together when

in mesh.

Press in the remaining

bearing.

Timing check

Keyway

pointing

down.

Bolt holes for

weights in

this position.

Hold this gear

Move this gear in

direction of arrow.

As you move the gear

the weight holes should

always go under and not

appear on the top face, if

they do appear on the

top then the helical gear

is 180 degrees out, and

will need correcting.

The next stage is to fit the

weights these are secured by

two different lengths of bolt

so it is important that the

short bolts are used only on

the shaft which houses the

piston.

There are two with shoulders

on the weights so these will

only fit one way

The other two have no

shoulder

The bolts securing the

weights must be torqued to

60nm.

The bolts for the non pulley

shaft are M10 X 35

Belle part no 7/1004

The bolts for the pulley shaft

are M10 X 25

Belle part no 7/10023.

This shows weights fitted

and just another check

on the timing,

Note position of the

weights,

Fit oil seal to end cap

Silicone is used to

seal the caps.

Cap bolts are tensioned to 10nm

Fit the back plate

Fit pulley with key

Bolt that secures pulley is

hollow up the centre and has a

hole in one of the flats.

This is the gearbox breather,

Do not over tighten the bolt.

Smear a film of oil in

the plunger cap

housing.

Fit the seal carefully to the

plunger.

Fit cover , support as

shown with spanner

while carefully sliding

cover over the seal.

Bolts 18NM

Fit the adaptor to the cover

for the hydraulic hose

Tighten to 35nm.

This now completes the build of the gearbox.

At this stage now the oil is added to the well

in the base plate, Quantity is 0.6 lts,

The grade is SAE 75W-90.

The gearbox can be now fitted to the base

plate

The bolt tension is 150 nm.

Once fitted and the engine re mounted to the

vibration mounts, the hydraulic hose is then

connected to the plunger housing,

Fill the hydraulic head with oil, 32 grade hydraulic

0.2 lts.

The head is self bleed so a few pumps and the

machine is ready to test,

This now completes the RPC 30/40 50

presentation.

Belle products are manufactured to

the highest standards.

Please ensure that operators

understand the machines and

capabilities.

If in doubt please consult the

operators manual.

Regular maintenance will always

sustain optimum performance and

reliability

Thank You For Listening.