Dynapac CA 251 User manual

Box 504, SE-371 23 Karlskrona, Sweden
Telephone [phone]
Telefax [phone]
DYNAPAC
CA 251
M251-1EN1
MAINTENANCE

1CA 251 M251-1EN1
Vibratory roller
CA 251
Maintenance
M251-1EN1, November 1999
Diesel engine:
Cummins 6BT 5.9
These instructions apply from:
CA 251 PIN (S/N) *58313611*
CA 251A PIN (S/N) *58313688*
We reserve the right to change specifications without notice.
Printed in Sweden.
KEEPTHISMANUAL
AVAILABLEFOR
FUTUREUSE
The CA 25-family consists of rollers CA 251, Std, D, PD and CA 251A.
These rollers are designed for the compaction of roads, airfields, dams and similar
constructions. The CA 251A compacts asphalt, roller concrete, base courses and
sub-base courses efficiently and with high capacity.
Separate information is available on request concerning accessories and extra equipment.

2CA 251 M251-1EN1
CONTENTS
Page
Lubricants, symbols .............................................................................................. 3
Specifications.................................................................................................... 4, 5
Maintenance points ............................................................................................... 6
Maintenance measures..................................................................................... 7, 8
Every 10 hours of operation (daily) ............................................7, 9, 10, 11, 12, 13
Every 50 hours of operation (weekly) ..................................................7, 14, 15, 16
Every 250 hours of operation (monthly) .........................................8, 17, 18, 19, 20
Every 500 hours of operation (every three months)...................................8, 20, 21
Every 1000 hours of operation (every six months) ..............................8, 22, 23, 24
Every 2000 hours of operation (yearly)................................................8, 25, 26, 27
Long-term parking ............................................................................................... 28
Special instructions ............................................................................................. 29
Electrical system................................................................................................. 30
Safety instructions – Personal safety.
Special caution – Machine or component damage.
Read the entire manual before starting any service work.
Ensure that ventilation (extraction) is adequate if the engine is run indoors.
It is essential that the machine is cared for in a proper manner to ensure satisfactory ope-
ration. Keep the machine clean to facilitate quick and timely detection of any leakage, loose
bolts and loose connections.
Make a habit each day, before starting up, of checking the roller to detect any leakage or
damage. Also check the ground underneath the roller, where it is most often easier to
detect any leakage.
TAKE CARE OF THE ENVIRONMENT
Do not leave behind any oil, fuel or other substances that are detrimental to the
environment.
This manual contains instructions for periodic measures that should normally be carried out
by the operator.
The manufacturer’s instructions noted in the engine manual also apply. This is
placed under a separate flap in the product folder for the roller.
WARNING SYMBOLS
GENERAL

3CA 251 M251-1EN1
LUBRICANTS AND SYMBOLS
Always use high-quality lubricants in the
amounts recommended. Too much grease or oil
can cause overheating and subsequent
increased wear.
ENGINE OIL, Shell Rimula SAE 15W/40 or equivalent.
ambient temperature -10°C - +50°C API Service CD/SE, CD/SF
HYDRAULIC FLUID,
ambient temperature -10°C - +40°C Shell Tellus Oil TX68 or equivalent.
ambient temperature higher than+40°CShell Tellus Oil T100 or equivalent.
TRANSMISSION OIL,
ambient temperature-15°C - +40°C Shell Spirax SAE 80W/90, HD API, GL-5
ambient temperature higher than+40°C Shell Spirax HD85W/140 or equivalent.
DRUM-CASSETTE OIL,
All temperatures Synthetic oil MOBIL SHC 629.
DRUM OIL, (CA 251A)
All temperatures Shell Spirax SAE 80W/90, HD API, GL-5
GREASE Shell Calithia EPT2 or equivalent.
Shell Malleus GL95 or equivalent for the
articulation.
FUEL Seeenginemanual.
COOLANT Shell Anti Freeze 402 or equivalent.
50/50 mixture with water Anti-freeze down to about -35ºC.
Engine, oil level Air filter
Engine,oil filter Battery
Hydraulic reservoir, level Tyre pressure
Hydraulic fluid, filter Sprinkler
Transmission, oil level Sprinkler water
Lubricatingoil Coolant, level
Fuelfilter Recycling
Other lubricants are required for driving in
extremely high or low ambient temperatures.
See chapter “Special instructions”, or consult
Svedala.
50/50

4CA 251 M251-1EN1
SPECIFICATIONS
Std D PD A
Weight EN500-1, standard equipped roller, kg (lbs) 9550 9 750 11150 10000
(21,054) (21,495) (24,581) (22,046)
Length, standard equipped roller, mm (in) 5 380 5 380 5450 5 532
(11,861) (11,861) (11,861) (11,861)
Width, standard equipped roller, mm (in) 2 373 2 373 2 373 2 373
(5,232) (5,232) (5,232) (5,232)
Height, standard equipped roller, mm (in) 2 175 2 175 2230 2 175
(4,795) (4,795) (4,916) (4,795)
Height, “ with ROPS, mm (in) 2 895 2 895 2945 2 895
(6,382) (6,382) (6,492) (6,382)
Height, “ with cab, mm (in) 2 800 2 800 2 850 2 800
(6,173) (6,173) (6,283) (6,173)
Weight and sizes CA 251
Fluid volumes Litre (gal or qts)
Rear axle:
•Differential ...................................12 l (12.7 qts)
• Planetary gearing ........................1,7 l/side (1.8 qts/side)
Pump drive/transfer gearbox .........1,5 l (1.6 qts)
Drum drive/Drum gear (D,PD).......2,8 l (3.0 qts)
Cassette, vibration generator ........A27 l/side (7.1 gal), 2,7 l/side (2.8 qts) cassette
Hydraulic reservoir ........................90 l (23.8 gal)
Fluid in hydraulic system ...............Std, A 26 l (6.9 gal), D, PD 25 l (6.6 gal)
Lubricating oil, diesel engine..........16 l (4.2 gal)
Coolant, diesel engine ...................27 l (7.1 gal)
Fuel tank........................................265 l (70 gal)
Water tank(A) ................................480 l (127 gal)
Emulsion tank(A) ...........................10 l (10.6 qts)
Electrical system
Battery .............................12 V, 160/170 Ah
Alternator .........................12 V, 95/105 A
Fuses ..............................8 A
Compaction data CA 251
Std D PD A
Static linear load ...................... kg/cm (pli) 23,8(133.3) 24,7(138.3) - 26,1(146.2)
Amplitude (High)...................... mm (in) 1,75 (0.07) 1,75(0.07) 1,63 (0.06) 0,8(0.031)
Amplitude (Low)....................... mm (in) 0,85(0.033) 0,85(0.033) 0,79(0.031) 0,4(0.015)
Frequency (High ampl.)........... Hz (vpm) 30 (1,800) 30(1,800) 30(1,800) 45 (2,700)
Frequency (Low ampl.) ........... Hz (vpm) 33 (1,980) 33(1,980) 33(1,980) 45 (2,700)
Centrifugal force (High ampl.)..... kN (lb) 203(45,675) 203(45,675) 249(56,025) 187(42,075)
Centrifugal force (Low ampl.) ..... kN (lb) 119(26,775) 119(26,775) 146(32,850) 94(21,150)
Tyres CA 251 CA 251A
Tyre size 23.1x26 8 ply 16.9x30 6 ply
Tyre pressure 110-150 kPa (1,1-1,5 kp/cm2) 110 kPa (1,1 kp/cm2)
As extra equipment the tyres can be filled with liquid (extra weight up to 600 kg
(1,323 lbs)). In connection with service remember the extra weight that this entails.

5CA 251 M251-1EN1
The ROPS bolts are always to be torque-tightened dry.
Bolt size: M24
Strength class: 8,8
Tighteningtorque: 640 Nm
ROPS
Tightening torque Tightening torque in Nm (lbf.ft) for oiled bolts tightened
with a torque wrench.
Hydraulic system Opening pressure (MPa)
Drive system 35
Supply system 2
Vibration system 35
Steering system 14
Brake release 1,5
Measured acoustic pressure level, LpA, on hard
base and vibration switched OFF:
Cummins: LpA: 92 dB(A)
Cummins with cab: LpA: 84 dB(A)
Noise level – Operator’s station
(ISO 6394)
Measurements taken with vibration ON and on foam-
rubber mat (Limit value 0.5 m/s2):
Machine Operator’s Operator’s platform
vibration level seat (m/s2)* floor (m/s2)**
CA 251Std./D 0,39 0,31
+ ROPS 0,29 0,33
+ cab 0,21 0,17
+ ROPS and cab 0,16 0,21
CA 251A 0,05 0,09
+ ROPS 0,04 0,04
* Sum of acceleration in the operator’s seat.
** Maximum acceleration in floor in z-axis.
Whole body vibration
– Operator’s station (ISO 2631)
(Hand/arm - steering wheel and F/R
lever vibration is less than the limit
value, 2.5 m/s2.)
Measured acoustic power level, LpA, on hard base
and vibration switched OFF:
Cummins: LwA: 112 dB(A)
Acoustic power level –
Surroundings
(SS 4591010)
M STRENGTH CATEGORY
thread 8.8 (Grade 5) 10.9 (Grade 8)
M4 2,5 (1.8) 3,4 (2.5)
M5 4,9 (3.6) 7,0 (5.2)
M6 8,4 (6.2) 12 (8.9)
M8 21 (15.5) 28 (20.7)
M10 40 (29.5) 56 (41.3)
M12 70 (51.6) 98 (72.3)
M16 169 (124.7) 240 (177)
M20 330 (243.4) 470 (346.7)
M24 570 (420.4) 800 (590.1)
M30 1130 (833.5) 1580 (1165.4)
M36 1960(1445.7) 2800 (2065.3)

6CA 251 M251-1EN1
MAINTENANCE SCHEDULE
Read the entire manual before starting any service work. It is
essential that the machine is cared for in a proper manner to
ensure satisfactory operation.
Keep the machine clean to facilitate quick and timely
detection of any leakage, loose bolts and loose connections.
Make a habit each day, before starting up, of checking the
roller and on the ground underneath it to detect any leakage
ordamage.
Fig.1 Service points
1. Drum gearbox (D and PD only)
2. Drum oil, filling (CA 251A)
3. Fuse box
4. Battery
5. Hydraulic fluid, filling
6. Breather filter, hydraulic reservoir
7. Sight glass, hydraulic fluid
8. Hydraulic filter, (3 off)
9. Air filter
10. Lubricating oil filter, diesel engine
11. Engine hood, hinges
12. Fuel filter/Water trap, diesel
engine
13. Coolant
14. Hydraulic fluid cooler
15. Feed pump, diesel fuel
16. -
17. Diesel fuel, filling
18. Engine suspension
19. Fuel tank, drain
20. Oil level, diesel engine
21. Rear axle suspension
22. Rear axle, lubricating oil levels
23. Wheel nuts
24. Tyre pressure
25. Drum scrapers (CA 251A)
26. Drain hydraulic reservoir
27. Tyre sprinkler (CA 251A)
28. -
29. Flywheel casing, transfer gear
box, hydraulic pumps
30. Steering cylinder
31. Steering joint
32. Rubber element, fastening screws
33. Level plug, drum oil (CA 251A)
34. Scraper
35. Sprinkler system (CA 251A)
36. Water tank (CA 251A)
37. Drum cassette, oil
38. Emulsion tank (CA 251A)
39. Strike-off blade
(optional equipment)
40. Washer fluid (optional equipment)
1 2 3 4,5 6 7 8 40 9 10 11 12 13,14
39 34 33 32 31 30 38 29 28 27 26 25 24 23 22,21 20 19
36
35
37
15
16
17
18

7CA 251 M251-1EN1
The periodic measures are to be carried out primarily in
conformance with the stated hours of operation,
secondarily for the periods daily, weekly, etc.
Remove all dirt before filling, when checking
oils and fuel, and when lubricating with oil or
grease.
The manufacturer’s instructions noted in the
engine manual also apply.
MAINTENANCE MEASURES
Items in fig. 1 Measure See page Comments
Before starting up
20 Check oil level in the engine Seeengineinstructionmanual.
13 Check coolant level 9
Test the brakes 9
25,34 Check the scraper setting 10
40 Check/top up with washer fluid 12
27,35 Inspect the sprinkler system (CA 251A) 13
After the day’s operation
7 Check the hydraulic reservoir level 11
17 Refuel 12
38 Fill the emulsion tank (CA 251A) 12
36 Fill the water tank (CA 251A) 13
Every 10 hours of operation (daily)
Items in fig. 1 Measure See page Comments
9 Clean the filter element in the air cleaner
or replace the main filter 14
Check that hoses and connections are tight
24 Check the tyre pressure 14
4 Check the battery 15
31 Grease the steering joints 16
30 Grease the steering cylinder brackets 16
39 Grease the strike-off blade mechanism 16
Every 50 hours of operation (weekly)
After the first 50 hours of operation change all the
oil filters and oil, except the hydraulic fluid.

8CA 251 M251-1EN1
MAINTENANCE MEASURES
Items in fig. 1 Measure See page Comments
20 Change the engine oil Seeengineinstructionmanual.
10 Change the engine oil filter Seeengineinstructionmanual.
22 Check the oil level in the rear
axle/planetarygearing 17
33,37 Check oil level in the drum/cassettes 17, 18
29 Check the oil level in the transfer gearbox 18
1 Check the oil level in the drum gearbox
(D and PD only) 18
18,21 Inspect bolted joints 19
31 Inspect the rubber elements 20
Every 250 hours of operation (monthly)
Every 500 hours of operation (every three months)
Items in fig. 1 Measure See page Comments
8 Change the hydraulic filter 20
Change the pre-fuel filter 21
11 Lubricate controls and pivoted joints 21
14,28 Clean the outside of the hydraulic cooler 21
Replace fuel filter Seeengineinstructionmanual.
Every 1000 hours of operation (every six months)
Items in fig. 1 Measure See page Comments
26 Drain condensation from the hydraulic reservoir 22
6 Replace breather filter on the hydraulic reservoir 22
19 Drain condensation from the fuel tank 22
9 Replace main filter in the air cleaner 23
Check belt tension of the fan and alternator Seeengineinstructionmanual.
Check engine valve clearance Seeengineinstructionmanual.
22 Change oil in the rear axle planetary gearing 23
22 Change oil the rear axle differential 24
Items in fig. 1 Measure See page Comments
26 Change the hydraulic fluid 25
29 Change oil in the transfer gearbox 25
2,37 Change oil in the drum/cassettes 25, 26
1 Change oil in the drum gearbox (D and PD only) 26
36 Clean the water tank (CA 251A) 27
38 Clean the emulsion tank 27
Every 2000 hours of operation (yearly)

9CA 251 M251-1EN1
Brakes – Check
EVERY 10 HOURS OF OPERATION (DAILY)
11 24
10
Fig.2 Radiator
1. Filler cap
Check operation of the brakes as follows:
Drive the roller slowly forward.
Press down the reserve brake (11). The brake warning
lamp (10) shall light and the roller shall stop.
After checking the brakes, put the forward/reverse
lever (24) in neutral before resetting the reserve brake.
Pull out the reserve brake knob.
Fig.4 Instrument panel
10. Brake warning lamp
11. Emergency stop knob
24. Forward/Reverse lever
Take great care if the radiator cap must be
opened while the engine is hot. Danger of
being burned.
Steps or equivalent are to be used when
checking the radiator.
Fill with coolant comprised of 50% water and 50% anti-
freezing agent. See page 3 in these instructions and
theenginemanual.
Change the coolant and flush the system
every other year. Ensure that air has free
passage through the radiator.
Coolant level, check
–Filling
Air circulation – Check
Fig.3 Coolingairgrille
1
Ensure that the engine has unimpeded circulation of
cooling air through the protective grille to the engine.

10 CA 251 M251-1EN1
EVERY 10 HOURS OF OPERATION (DAILY)
Scrapers (CA 251)
– Checking, adjusting
2
1
Adjust the distance as follows:
Loosen all four screws, while holding the nut on the
inside.
Set the scraper about 20 mm (0.79 in) from the drum.
Tighten the fastening screws.
Remember that the drum moves when the
machine turns. If adjustments are made closer
than the recommended value the scrapers
may be damaged and cause increased wear
of the drum.
Fig.5 Scraper
1. Fastening screws
2. Scraper
Drum:
Check that the scrapers are intact, and adjust the
distance as follows:
Loosen all the fastening screws.
Set the scraper against the drum.
Tighten the fastening screws.
Tyres:
Check that the scrapers are intact, and adjust the
distance as follows:
The scraper blade (4) should lie against the tyre with a
20-mm pre-tensioning of the spring (3). The pre-
tensioning is to be set with the scraper tensioner (2).
For transport driving, release the scraper from the tyre
and tension with the cotter (1).
Fig.6 Scraper
1. Fastening screws
2. Scraper
2
3
4
Fig.7 Tyre scraper
1. Cotter
2. Scraper tensioner
3. Spring
4. Scraper
1
12
Scrapers (CA 251A)
– Checking, adjusting

11CA 251 M251-1EN1
EVERY 10 HOURS OF OPERATION (DAILY)
1
Place the roller on level ground and check that the oil
level is between the max. and min. marks in the sight
glass (1).
Top up with hydraulic fluid according to the lubricant
specification if the level is too low.
Fig.8 Hydraulic reservoir
1. Sight glass
Hydraulic reservoir
– Checking the fluid level
Diesel engine
– Checking the oil level
Fig.10 Engine compartment
1. Oil dipstick
Place the roller on a level base. The engine
is to be switched off and the parking brake
applied for all checking and adjustments
on the roller unless stated otherwise.
Beware of hot parts of the engine and hot
radiator when taking out the oil dipstick.
Danger of being burned.
The dipstick is on the right-hand side of the engine.
Pull the dipstick (1) up and check that the oil level is
between the upper and lower marks. See the engine
manual for further details.
1
Hydraulic reservoir – Filling
Fig.9 Battery box
1. Suction hose
2. Protective plug
3. Pump arm
Remove the cover on the right side under the
operator’s seat.
Take out the suction hose (1).
Clean the hose and screw off the protective plug (2).
Insert the hose into a barrel of fresh hydraulic fluid.
Attach the pump arm (3), and pump until the reservoir is
full according to the marks on the sight glass. Hydraulic
fluid is pumped to the reservoir through a filter, so
always fill with fluid in this way.
3
1
2

12 CA 251 M251-1EN1
EVERY 10 HOURS OF OPERATION (DAILY)
Refuel every day at the end of work. Top up to the
lower edge of the filler pipe. Use diesel fuel in
accordance with the engine manufacturer’s
specifications.
Stop the diesel engine. Short (press) the
filler gun against a non-insulated part of
the roller before refuelling, and against the
filler pipe (1) while refuelling is in progress.
CA 251 holds 265 litre (70 gal) fuel.
Fuel tank – Refuelling
Check the level and fill the emulsion tank as required.
The emulsion fluid is only for lubricating the tyres. The
pump and filter are located inside the cover at the
bottom of the tank.
Remember the risk of freezing during the
winter. Empty the tank, pump and leads.
Emulsion tank (CA 251A)
–Filling
2
1
Fig.13 Left side of frame
1. Emulsion tank
2. Place for pump and filter
Fig.12 Fuel tank
1. Filler pipe
1
Washing fluid
– Checking/Filling (Cab)
Fig.11 Engine compartment
1. Washer bottle
Open the right-hand cover of the engine compartment
and fill the washer fluid bottle (1).
Remember the risk of freezing during the
winter. Empty the tank, pump and leads.
1

13CA 251 M251-1EN1
EVERY 10 HOURS OF OPERATION (DAILY)
1234
Dismantle the clogged nozzle. Blow the nozzle and
strainer clean with compressed air, or fit replacement
parts, and clean the clogged parts at a later opportun-
ity.
Wear protective goggles when working
with compressed air.
Sprinkler system (CA 251A)
Checking – Cleaning
Nozzle (CA 251A)
Dismantling – Cleaning
Fill with clean water through the tank filter.
Ensure that the sprinkler nozzles (1) are not clogged.
Clean them and the water filter if necessary.
1
2
Fig.14 Water tank
1. Nozzle
2. Pump system
Fig.15 Nozzle
1. Sleeve
2. Nozzle
3. Seal
4. Strainer
Take off the cover on the front frame beam and remove
the screws.
The sprinkler system has two water pumps and filter.
When cleaning, close the stop cock (3) and loosen the
filter housing (2). Clean the insert and the filter housing
with water.
Listen or put your hand on the water pump to check
that it is working.
1 2 3
Fig.16 Pump system
1. Water pump
2. Water filter
3. Stop cock
Pump system (CA 251A)
Checking – Cleaning

14 CA 251 M251-1EN1
Use compressed air at a maximum pressure of 0.7
MPa (7 kp/cm2).
Blow up and down the paper pleats on the inside of the
filter element. Hold the nozzle at least 10 mm (0.39 in)
from the paper pleats so as to avoid tearing the paper.
Change the main filter at the latest after 5
cleanings.
Wear protective goggles when working
with compressed air.
When the tyres are filled with liquid the air pressure
valve (1) must be set at “12 o’clock” when pumping.
Check the tyre pressure with a pressure gauge.
Min. tyre pressure = 110 kPa (1.1 kp/ cm2).
Max. tyre pressure = 150 kPa (1.5 kp/cm2)
Tyre pressure CA 251A: 110 kPa (1.1 kp/cm2)
Check both tyres.
When changing the tyres it is important that
both tyres have the same rolling radius (max.
difference about 15 mm (0.59 in)). The no-spin
equipment may otherwise be damaged.
Check tightening torque of the wheel nuts (2) at 550
Nm (406 lbf.ft). Check both wheels and all nuts (applies
only for a new machine or newly fitted wheel).
Replace or clean the main filter of the air
cleaner when the warning lamp on the instru-
ment panel lights at full engine revs.
Loosen the clamp (4) and take out the dust trap (3).
Loosen the wing nut at the centre of the filter and take
out the inner cover (5). Clean the dust trap with a clean
rag.
Loosen the wing nut and pull out the main filter (6).
Wipe the inside of the filter housing (1) and the input
tube with a clean rag.
Ensure that connections and hoses between the filter
housing and engine are intact and tight.
Clean the emptying slit (7) of the dust trap.
Replace the secondary filter (2) with a new
one after every third replacement or third
cleaning of the main filter. The secondary filter
cannot be cleaned.
Air cleaner – Cleaning
themain filter element
EVERY 50 HOURS OF OPERATION (WEEKLY)
6 5 4 3
2
1
7
Fig.17 Air cleaner
1. Filter housing
2. Secondary filter
3. Dust trap
4. Clamp
5. Inner cover
6. Primary filter
7. Emptying slit
Tyres – Tyre pressure
Wheel nuts – Tightening
Fig.19 Wheels
1. Air valve
2. Wheel nuts
1
Fig.18 Main filter
Cleaning with
compressed air
2

15CA 251 M251-1EN1
Battery – Checking the
electrolytelevel
EVERY 50 HOURS OF OPERATION (WEEKLY)
Never use an open flame when checking the
electrolyte level. Explosive gas is generated
when the alternator is charging.
Turn the knob (1).
Pull out the battery shelf.
Wipe the top of the battery dry.
Wear safety goggles. The battery contains
acid. Rinse with water if splashed with
electrolyte.
Take off the cell caps and ensure that electrolyte is
about 10 mm (0.39 in) above the plates. Check the
level of all cells. Top up with distilled water to the right
level if the level is low. If the air temperature is below
freezing point the engine should be run for a while
before topping up with distilled water. There is
otherwise a danger that the electrolyte will freeze.
Ensure that the ventilation holes in the cell cover are
not clogged. Then put the cover back on.
The cable shoes should be clean and well tightened.
Clean corroded cable shoes and grease them with
acid-free Vaseline.
Ensure always that the battery box is
closed and locked while driving.
When disconnecting the battery, always
disconnect the negative cable first. When
connecting the battery, always connect the
positive cable first.
Get rid of discarded batteries in a proper way.
Batteries contains lead which is detrimental to
theenvironment.
Before doing any electric welding on the
machine, disconnect the battery earth
cable and then all electrical connections to
the alternator.
Fig.20 Battery shelf
1. Knob
1
1
Fig.21 Battery shelf
1. Battery
Battery cell
Fig.22 Electrolyte level in battery
1. Cell cap
2. Electrolyte level
3. Plate
1
2
3
10 mm
(0.39in)

16 CA 251 M251-1EN1
Strike-off blade – Lubrication
Fig.25 Strike-off blade
1. Grease nipples
Always lower the blade when leaving/
parking the machine.
Lower the blade.
Wipe the grease nipples on both sides of the machine.
Grease each nipple (1) with four strokes of the grease
gun. Ensure that grease penetrates the bearings. Use
grease according to the lubricant specification on page
3.
1
EVERY 50 HOURS OF OPERATION (WEEKLY)
Nobody is to be allowed near the articula-
tion joint when the engine is running. Dan-
ger of being crushed.
Turn the steering wheel fully to the left to gain access to
all five nipples on the right side of the steering system.
Wipe the nipples clean from grease and dirt.
Grease each nipple with five strokes of the grease gun.
Use grease according to the lubricant
specifications.
1
2
Steering joint – Steering
cylinders Lubrication
Fig. 23 Steering joint. Right side
1. Grease nipples, steering joint
(3 off)
2. Grease nipples, cylinder mount
(2 off)
1
2
Fig. 24 Steering joint, left side
1. Grease nipples, steering joint
2. Grease nipples, cylinder mount
Steering joint – Lubrication Turn the steering wheel fully to the right to gain access
to the three grease nipples on the left steering cylinder.
Allow a little grease to remain on the nipples after
greasing. This will prevent contamination from entering
the nipples.
Wipe the nipples clean from grease and dirt.
Grease each nipple with five strokes of the grease gun.
Ensure that grease penetrates the bearings.
If grease does not penetrate the bearings it
may be necessary to relieve the articulation
joint with a jack while repeating the greasing
process.
1
2
1
2

17CA 251 M251-1EN1
EVERY 250 HOURS OF OPERATION (MONTHLY)
2
31
Applies to both sides of the drum, ie, two checks.
Place the roller on a level surface so that the level pin
is at the top of the frame beam.
Unscrew the level plug (3) (small hexagon) a few turns.
If the level is correct oil should now flow from the plug.
Top up with transmission oil as required, see the
specification. Fill through the filler plug (2) (large hexa-
gon).
Fig.28 Right side of drum
1. Dipstick
2. Filler plug
3. Level plug
Drum (CA 251A)
– Checking the oil level
Rear axle differential
– Checking the oil level Never work underneath the roller when the
engine is running. Park on a level surface.
Chock the wheels.
Ensure that the roller is level.
Remove the level plug (1) and check that the oil level
reaches the lower edge of the plug hole. Top up to the
right level through the plug (1) if the level is low. Use
transmission oil according to the lubricant specification.
Run the roller on a level surface until the plug (1) in the
planetary gearing is at 9 o’clock.
Remove the level plug and check that the oil level
reaches the lower edge of the plug hole. Top up to the
right level through the plug (1) if the level is low. Use
transmission oil. See lubricant specification on page 3.
Check the oil level in the same way in the other
planetary gearing of the rear wheel.
1
1
Fig.26 Level check – differential housing
1 Level/Filler plug
Rear axle planetary gearing
– Checking the oil level
Fig.27 Level check – differential gearing
1 Level/Filler plug

18 CA 251 M251-1EN1
EVERY 250 HOURS OF OPERATION (MONTHLY)
Drum gearbox (D, PD)
– Checking the oil level Applies to D & PD only:
Place the roller on a level surface with the filler plug (1)
at its highest point.
Wipe clean round the plugs.
Remove the plugs and ensure that the oil level reaches
the level plug.
Top up with transmission oil as required, see the
lubricant specification.
2
1
Fig.31 Drum gearbox
1. Filler plug
2. Level/drain plug
Fig.29 Right side of drum
1. Filler plug
2. Level/Drain plug
Place the roller on a level surface so that the filler plug
(1) (large plug with 24- mm (0.945 in) wrench size) is
straight up, screw off the plug.
Screw out the level plug (2) (small plug with 13-mm
(0.512 in) wrench size). A small amount of oil may run
out as the plug (2) is unscrewed, ie, oil remaining in the
level pipe.
Note!Usesyntheticoilacc.tothespecificationonpage3.
Top up with oil through the filler plug (1) until it starts to
run out from the level plug hole. The level is correct
when it stops running.
Clean the magnetic filler plug (1) from any metal
particles before refitting it.
Repeat the procedure on the opposite side.
Do not overfill with oil, danger of overheating.
Drum cassette
– Checking the oil level
1
2
Fig.30 Drum cassette
1. Level pipe
2. Level/Drain plug
1
2