Dynapac CA 251 Guide

1CA 251/301 M251EN2
VIBRATION ROLLER
M251EN2, December 1996
Diesel engine:
Deutz F6L 912
Cummins 6BT 5.9
The instructions apply from
CA 251: PIN (S/N) *58310256*
CA 301: PIN (S/N) *59010306*
CA 251A: PIN (S/N) *58310414*
MAINTENANCE
CA 251/301
The CA 25/30 family of vibratory rollers
consists of the CA 251 Standard, Drum Drive
(D) and Pads+Drum Drive (PD) together with
CA 301 Std., D and PD.
These rollers are designed for the compaction
of roads, airfields, dams and similar
constructions.
The CA 251A compacts asphalt, concrete,
base courses and subbase courses efficiently
and at a high rate.
Printed in Sweden
We reserve the right to change specifications without notice
KEEP THIS MANUAL
AVAILABLE FOR FUTURE USE
Box 504 • SE-371 23 KARLSKRONA • Sweden
Tel. [phone] • Telex 43041 dynkar s
Telecopier [phone]

2CA 251/301 M251EN2
CONTENTS
Page
Lubricants, symbols .........................................................3
Specifications...........................................................4, 5, 6
Maintenance schedule .....................................................7
Maintenance Procedures .............................................8, 9
Every 10 hours (Daily) .......................7, 10, 11, 12, 13, 14
Every 50 hours (Weekly)..........................7, 15, 16, 17, 18
Every 250 hours (Monthly).............................8, 19, 20, 21
Every 500 hours (Three months) .........................8, 22, 23
Every 1000 hours (Six months)............................8, 24, 25
Every 2000 hours (Yearly) .......................8, 26, 27, 28, 29
Long-term parking..........................................................30
Special instructions ........................................................31
Electrical system ............................................................32
Warning - Personal safety may be involved.
Caution - Machine or component damage
Read all the instructions thoroughly before
carrying out any servicing operations.
Ensure that ventilation (evacuation) is
adequate if the engine is run indoors.
Proper care of the roller is essential to ensure satisfactory
operation. Keep the machine clean so that any leakage,
loose bolts or loose connections can be easily detected.
TAKE CARE OF THE ENVIRONMENT. Do not spill oil or
fuel, or leave anything else that could be detrimental to
the environment.
This manual includes instructions for periodic maintenance
which should normally be carried out by the operator.
Instructions in the engine manufacturer’s manual
also apply. The manual is included in the product
folder supplied with the roller.
WARNING SYMBOLS
WARNING
GENERAL
CAUTION
WARNING
CAUTION
WARNING
CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some of its
constituents are known to the State
of California to cause cancer, birth
defects, and other reproductive
harm.

3CA 251/301 M251EN2
SMÖRJMEDEL, SYMBOLERLUBRICANTS AND SYMBOLS
Always use high-quality lubricants in the
amounts recommended. Too much grease or
oil can cause overheating and subsequent
increased wear.
CAUTION
CAUTION
ENGINE OIL, ambient temp. Shell Rimula SAE 15W/40 or equivalent.
-10°C to +50°C (14°F to 122°F) API Service CD/SE, CD/SF
HYDRAULIC FLUID, ambient temp.
-10°C to +40°C (14°F to 104°F) Shell Tellus Oil TX68 or equivalent
above +40°C (+104°F) Shell Tellus Oil T100 or equivalent
TRANSMISSION OIL, ambient temp.
-15°C to +40°C (5°F to 104°F) Shell Spirax SAE 80W/90, HD API, GL-5
above +40°C (+104°F) Shell Spirax HD85W/140 or equivalent
DRUM OIL/CASSETTE OIL
All temperatures Synthetic oil, MOBIL SHC 629 or equivalent
GREASE Shell Calithia EPT2 or equivalent
FUEL See engine manual
COOLANT Shell Anti Freeze 402 or equivalent.
50/50 mixture with water Freeze safe down to about -35°C (-31°F).
Engine oil level Air cleaner
Engine oil filter Battery
Hydraulic reservoir level Tyre pressure
Hydraulic fluid filter Sprinkler
Transmission oil level Sprinkler water
Lubricating oil Coolant level
Fuel filter Recyclable
Other lubricants are required for operation in
extremely high or extremely low ambient
temperature. See, chapter ”Special
instructions”, or get in touch with Dynapac.
50/50

4CA 251/301 M251EN2
SPECIFICATIONS
Std D PD A Std D PD
Weight CECE,
standard equipped roller, kg (lbs) 9550 9750 11150 10000 11350 12050 11900
(21,060) (21,500) (24,590) (22,050) (25,030) (26,570) (26,240)
Length, std. equipped roller, mm (in) 5380 5380 5450 5532 5380 5430 5450
(212) (212) (215) (218) (212) (214) (215)
Width, std. equipped roller, mm (in) 2373 2373 2373 2373 2373 2373 2373
(93) (93) (93) (93) (93) (93) (93)
Height, std. equipped roller, mm (in) 2175 2175 2230 2175 2180 2180 2230
(86) (86) (88) (86) (86) (86) (88)
Height, " with ROPS, mm (in) 2895 2895 2945 2895 2900 2900 2945
(114) (114) (116) (114) (114) (114) (116)
Height, " with cab, mm (in) 2800 2800 2850 2800 2800 2800 2850
(110) (110) (112) (110) (110) (110) (112)
Weight and sizes CA 251 CA 301
Fluid volumes Litres (gal or qts)
Rear axle:
• Differential ...................................12 (12.7 qts)
• Planetary gears ...........................3,1 (3.3 qts)/each side
Pump drive/Transfer gearing.........1,5 (1.6 qts)
Drum drive/Torque hubs (D,PD)....2,8 (3.0 qts)
Drum, vibrator................................(A) 27 (7.1 gal)/each side, 2,7 (2.85 qts)/each side (cassette)
Hydraulic reservoir ........................90 (24 gal)
Hydraulic system ...........................(Std, A) 26 (6.9 gal), (D, PD) 25 (6.6 gal)
Diesel engine.................................(Deutz) 14 (14.8 qts), (Cummins) 16 (16.9 qts)
Coolant (Cummins) .......................27 (7.1 gal)
Fuel tank........................................265 (70 gal)
Water tank (A) ...............................480 (127 gal)
Emulsion tank (A) ..........................10 (10.6 qts)
Electrical system
Battery .............................12 V, 160/170 Ah
Alternator.........................12 V, 95/105 A
Fuses...............................8 A

5CA 251/301 M251EN2
Bolt size: M24
Strength class: 8.8
Tightening torque: 640 Nm (472 ftlbs)
ROPS
Tightening torque Tightening torque in Nm (ftlbs) for oiled bolts tightened
with a torque wrench.
M STRENGTH CLASS
thread 8.8 10.9 12.9
M6 10 (7) 14 (10) 17 (12)
M8 24 (18) 33 (24) 40 (29)
M10 47 (35) 65 (48) 79 (58)
M12 81 (60) 114 (84) 136 (100)
M14 128 (94) 181 (133) 217 (160)
M16 197 (145) 277 (204) 333 (245)
M18 275 (202) 386 (284) 463 (340)
M20 385 (283) 541 (398) 649 (477)
M22 518 (381) 728 (535) 874 (643)
M24 665 (489) 935 (688) 1120 (824)
M27 961 (707) 1350 (993) 1620(1191)
M30 1310 (963) 1840(1353) 2210(1625)
Vibration data CA 251 CA 301
Std D PD A Std D PD
Static linear load.................... kg/cm 23,8 24,7 - 26,1 31,5 35,3 -
(pli) (133) (138) - (146) (176) (198) -
Amplitude (High) ................... mm 1,75 1,75 1,63 0,8 1,72 1,72 1,63
(in) (0.069) (0.069) (0.064) (0.031) (0.068) (0.068) (0.064)
Amplitude (Low) .................... mm 0,85 0,85 0,79 0,4 0,84 0,84 0,79
(in) (0.033) (0.033) (0.031) (0.016) (0.033) (0.033) (0.031)
Frequency (High ampl.) ......... Hz 30 30 30 45 30 30 30
(vpm) (1,800) (1,800) (1,800) (2,700) (1,800) (1,800) (1,800)
Frequency (Low ampl.).......... Hz 33 33 33 45 33 33 33
(vpm) (1,980) (1,980) (1,980) (2,700) (1,980) (1,980) (1,980)
Centrifugal force (High ampl.) kN 203 203 249 187 249 249 249
(lb) (45,675) (45,675)(56,025)(42,075) (56,025)(56,025) (56,025)
Centrifugal force (Low ampl.) . kN 119 119 146 94 146 146 146
(lb) (26,775) (26,775)(32,850)(21,150) (32,850)(32,850) (32,850)
Propulsion data CA 251/301/251A CA 251D/301D CA 251D/301PD
Speed range km/h (mph) 0-23 (0-14.3) 0-10 (0-6.2) 0-10 (0-6.2)
Climbing capacity (theoretical) % 40 62* 62*
(*Deutz: 57% with std. oil sump)
Tires CA 251/301 CA 251A
Tire size 23.1x26 8 ply 16.9x30 6 ply
Tire pressure 110-150 kPa (1,1-1,5 kp/cm2) (16-22 psi) 110 kPa (1,1 kp/cm2) (16 psi)
As an option, the tires can be filled with liquid.
In connection with service, remember the extra weight that this implies.
WARNING

6CA 251/301 M251EN2
SPECIFICATIONS
Hydraulic system Relief pressure MPa P.S.I
Traction system 35 5,100
Charge relief 2 290
Vibration system 35 5,100
Steering system 14 2,050
Brake release 1.5 220
Measured sound pressure level, LpA, on hard
supporting surface and with vibration switched off:
Deutz: LpA: 86 dB(A)
Deutz and cab: LpA: 89 dB(A)
Cummins: LpA: 92 dB(A)
Cummins and cab: LpA: 84 dB(A)
Noise level — Operator’s
position (ISO 6394)
Sound effect level
— Surroundings (SS 4591010) Measured sound effect level, LwA, on hard
supporting surface and with vibration switched off:
Deutz: LwA: 108 dB(A)
Deutz and cab: LwA: 108 dB(A)
Cummins: LwA: 112 dB(A)
Measured with vibration switched on and on a foam
rubber mat (Limit value 0,5 m/s2):
Vibration level Operator’s Floor of operator's
for machine seat (m/s2)* platform (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 301Std./D 0,30 0,10
+ ROPS 0,23 0,38
+ cab 0,32 0,24
+ ROPS and cab 0,35 0,32
CA 251A 0,05 0,09
+ ROPS 0,04 0,04
* Aggregate acceleration on operator’s seat
** Maximum acceleration in z-axis of floor.
Whole body vibration
— Operator’s position (ISO 2631)

7CA 251/301 M251EN2
MAINTENANCE SCHEDULE
Read through the manual before carrying out any
maintenance operations. Proper care of the roller is essential
to ensure satisfactory operation.
Keep the machine clean so that any leakage, loose bolts or
loose connections can be easily detected. Make a habit of
checking around the roller and also on the ground. This is
usually the easiest way to detect any leakage at an early
stage.
Fig. 1 Service points
1. Torque hubs (D and PD only)
2. Drum oil, filling
3. Fuse box
4. Battery
5. Hydraulic fluid, filling
6. Venting filter, hydraulic reservoir
7. Sight glass, hydraulic reservoir
8. Hydraulic fluid filter (3 off)
9. Air cleaner
10. Lubricating oil filter, engine
11. Engine hood, hinge
12. Fuel filter/Water separator, engine
13. Coolant, Cummins
14. Hydraulic fluid cooler, Cummins
15. Feed pump, diesel fuel
16. V-belt
17. Diesel fuel, filling
18. Engine suspension
19. Fuel tank, drain
20. Oil level, engine
21. Rear axle suspension
22. Rear axle, lubricating oil levels
23. Wheel nuts
24. Tire pressure
25. Scrapers (CA 251A)
26. Drain, hydraulic reservoir
27. Tyre sprinkler (CA 251A)
28. Hydraulic fluid cooler, Deutz
29. Flyweel cover, hydraulic pumps
30. Steering cylinder
31. Steering articulation
32. Rubber element, fastening bolts
33. Level plug, drum oil
34. Scraper
35. Sprinkler system (CA 251A)
36. Water tank (CA 251A)
37. Drum cassette, oil
38. Emulsion tank (CA 251A)
39. Levelling blade (optional
equipment)
40. Wind shield wash, cab (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

8CA 251/301 M251EN2
The periodic measures shall be performed in the first
case at the number of operating hours stated, in the
second case for the period stated, ie, daily, weekly, etc.
Always clean away dirt before filling or
checking any oil, hydraulic fluid or fuel, and
before lubricating with grease or oil.
Instructions in the engine manufacturer’s
manual also apply.
CAUTION
MAINTENANCE MEASURES
Item in Procedure See Comments
fig. 1 page
Before starting each day
20 Check level of engine oil See engine manual
13 Check coolant level, Cummins 10
Check the brakes 10
25,34 Check scraper setting 11, 12
40 Check/top up wind shield liquid 12
27,35 Check sprinkler system (CA 251A) 14
On completion of day´s work
7 Check level of hydraulic reservoir 12
17 Refuel 13
38 Fill the emulsion tank (CA 251A) 13
36 Fill water tank (CA 251A) 14
Every 10 hours of operation (Daily)
Item in Procedure See Comments
fig. 1 page
10 Change engine oil and oil filter See engine manual
9 Clean air cleaner insert or change main filter 15
Ensure that hoses and connections are tight
24 Check tire pressure 15
4 Check the battery 16
31 Lubricate steering joint 17
30 Lubricate the steering cylinder brackets 17
39 Lubricate the levelling blade mechanism 18
1 Change oil in torque hubs (D and PD only) 27
Every 50 hours of operation (Weekly)
After the first 50 hours of operation, change all oil
and hydraulic fluid filters and lubricating oil, but
not the hydraulic fluid.
CAUTION
CAUTION

9CA 251/301 M251EN2
MAINTENANCE MEASURES
Item in Procedure See Comments
fig. 1 page
20 Change engine oil, Cummins See engine manual
10 Change engine oil filter, Cummins See engine manual
20 Clean engine cooling fins, DEUTZ See engine manual
20,16 Check V-belt monitoring, DEUTZ See engine manual
Check belt tension on fan and alternator See engine manual
22 Check oil level in rear axle/planetary gear 19
33,37 Check oil level in drum/cassettes 19, 20
1 Check oil level in torque hubs (D and PD only) 20
18,21 Check bolted joints 21
29 Check oil level in transfer gearbox 21
31 Check rubber elements 21
Every 250 hours of operation (Monthly)
Every 500 hours of operation (Every three months)
Item in Procedure See Comments
fig. 1 page
8 Change the hydraulic fluid filters 22
11 Lubricate controls and pivots 23
14,28 Clean outside of hydraulic fluid cooler 23
20 Change engine oil, DEUTZ See engine manual
10 Change engine oil filter, DEUTZ See engine manual
Check engine valve clearance See engine manual
Every 1000 hours of operation (Every six months)
Item in Procedure See Comments
fig. 1 page
26 Drain condense water from hydraulic reservoir 24
19 Drain condense water from fuel tank 24
6 Change venting filter on hydraulic reservoir 24
9 Change main filter of air cleaner 25
15 Clean strainer of feed pump, DEUTZ See engine manual
Item in Procedure See Comments
fig. 1 page
26 Change fluid in hydraulic reservoir 26
29 Change oil in transfer gearbox 26
2,37 Change oil in drum/cassettes 26, 27
1 Change oil in the torque hubs (D and PD only) 27
22 Change oil in rear axle planetary gears 28
22 Change oil in rear axle differential 28
36 Clean the water tank (CA 251A) 29
38 Clean the emulsion tank (CA 251A) 29
Every 2000 hours of operation (Yearly)

10 CA 251/301 M251EN2
Brakes - Test
EVERY 10 HOURS OF OPERATION (Daily)
11 24
10
Fig. 2 Radiator
1. Filler cap
Check operation of the brakes as follows:
1. Drive the roller slowly forward.
2. Press the emergency stop knob (11). The brake
warning lamp (10) should light and the roller should
stop.
3. On completion of the test, put the forward/reverse
control (24) in neutral before resetting the
emergency stop.
4. Pull the emergency knob out.
Fig. 4 Instrument panel
10. Brake warning lamp
11. Emergency stop
24. Forward/reverse lever
CUMMINS:
At operating temperature the coolant is
under pressure. If the cap is opened too
quickly, steam will escape with the risk of
severe scalding. Wear protective gloves
and goggles.
Use steps or other suitable aid when checking
the radiator.
See the engine manual. See specification for filling with
coolant.
Change the coolant and flush out the system
every other year. Check also that air can flow
freely through the radiator.
Coolant level, checking
- filling
Air circulation - Checking
Fig. 3 Cooling grille
1
Ensure that circulation to the engine through the grille
is not obstructed.
WARNING
CAUTION
CAUTION
WARNING

11CA 251/301 M251EN2
EVERY 10 HOURS OF OPERATION (Daily)
Scrapers (CA 251)
- checking, adjustment
2
1
Adjust distance to the drum as follows:
1. Loosen the four fastening bolts.
2. Adjust the scraper blade about 10 mm (0.4") from
the drum.
3. Tighten the fastening bolts.
Fig. 5 Scraper
1. Fastening bolts
2. Scraper blade
Drum:
Ensure that the scrapers are intact and adjust the
distance as follows:
1. Loosen all the fastening bolts.
2. Adjust the scraper to the drum.
3. Tighten the fastening bolts.
Tire:
1. The scraper blade (4) shall make contact with the
tire with a 20 mm (0.8") pre-tensioning of the spring
(3). The pre-tensioning is adjusted with the scraper
stretcher (2).
2. For transport runs, retract the scraper from the tire
and secure with the cotter pin (1).
Fig. 6 Scraper
1. Fastening bolts
2. Scraper blade
2
3
4
Fig. 7 Tyre scraper
1. Cotter pin
2. Scraper stretcher
3. Spring
4. Scraper
1
1 2
Scrapers (CA 251A)
- checking, adjustment

12 CA 251/301 M251EN2
EVERY 10 HOURS OF OPERATION (Daily)
2
1
1. Loosen the four fastening bolts on half of the scraper
blade.
2. Set the scraper blade about 20 mm (0.8") from the
drum. Tighten the bolts.
3. Adjust the other three scraper blade sections to the
same gap.
Fig. 8 Front scraper
1. Scraper blade
2. Fastening bolts
Scrapers (CA 301)
- checking, adjustment
1
1. Position the roller on a level surface and check the
sight glass reading (1).
2. Top off with hydraulic fluid, see Lubricant Specifica-
tion on page 3, if the level is 20 mm (0.8") or more
below the upper edge of the glass, or if oil is not
visible in the sight glass.
Fig. 9 Hydraulic reservoir
1. Sight glass
Hydraulic reservoir -
Checking the level
Wind shield liquid
- Check/Top up (Cab)
Fig. 10 Engine compartment
1. Wind shield liquid bottle
Open the right cover of the engine compartment and
top up the wind shield liquid bottle (1).
Remember the danger of freezing in the
winter. Empty the tank, pump and piping.
1
CAUTION

13CA 251/301 M251EN2
EVERY 10 HOURS OF OPERATION (Daily)
Refuel with diesel fuel up to the lower edge of the filler
pipe daily at the end of operations.
Stop the engine. Ground the refuelling
nozzle by touching it against a non-
insulated part of the roller before refuelling,
and keep the nozzle against the inside of
the filler pipe (1) while filling the tank.
(See the engine manufacturer’s instructions with regard
to quality of diesel fuel.)
Fuel tank, refuelling
WARNING
Check the level and fill the emulsion tank as required.
The emulsion is used only to lubricate the tires. The
pump and filter are located behind the cover adjacent
to the bottom of the tank.
Remember the danger of freezing in 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. Space for pump and filter
Fig. 12 Fuel tank
1. Filler pipe
Hydraulic reservoir, filling
Fig. 11 Battery box
1. Suction hose
2. Protective plug
3. Pump lever
1. Take off the cover on the right side underneath the
operator’s seat.
2. Take out the suction hose (1).
3. Clean the hose and screw off the protective plug (2).
4. Insert the hose in a drum of fresh hydraulic fluid.
5. Fit the pump lever (3), and pump with the lever and
fill the reservoir to the level on the sight glass. The
fluid is pumped via a filter to the reservoir so always
follow this procedure when filling.
3
1
2
CAUTION
1

14 CA 251/301 M251EN2
EVERY 10 HOURS OF OPERATION (Daily)
1234
Dismantle a clogged nozzle. Blow the nozzle and
strainer clean with compressed air, or fit replacements,
and clean the clogged items at a later opportunity.
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.
Make sure that the strainer nozzles (1) are not
clogged. If necessary, clean the nozzles and strainer.
WARNING
CAUTION
1
2
Fig. 14 Water tank
1. Nozzle
2. Pump system
Fig. 15 Nozzle
1. Sleeve
2. Nozzle
3. Seal
4. Strainer
1. Remove the screws and take off the cover from the
forward frame beam.
2. The sprinkler system includes 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.
3. Listen, or place your hand on the water pump to
ensure 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

15CA 251/301 M251EN2
Check the tires with a pressure gauge.
Minimum tyre pressure = 110 kPa (1,1 kp/cm2) (16 psi).
Maximum tyre pressure = 150 kPa (1,5 kp/cm2) (22 psi).
Tyre pressure CA 251A: 110 kPa (1,1 kp/cm2) (16 psi).
Check both tyres.
When changing tires it is essential that both
tires have the same rolling radius
(max. difference about 15 mm or 0.6").
No-spin equipment may otherwise be
damaged.
Change or clean the Primary filter of the air
cleaner when the warning lamp on the instru-
ment panel lights at full revs of the diesel
engine.
1. Loosen the clamp (4) and remove the dust trap (3).
2. Screw off the wing-nut at the center of the filter and
take off the inner cover (5). Clean inside the dust
trap with a clean rag.
3. Screw off the wing-nut and pull out the Primary filter
(6).
4. Wipe the inside of the filter housing (1) and intake
pipes with a clean rag.
5. Check that hoses and connections between the filter
housing and engine are intact and tight.
6. Clean the emptying slits (7) of the dust trap.
Replace the Secondary filter (2) with a new one
every third time the Primary filter is changed or
cleaned. The Secondary filter cannot be
cleaned and reused.
Use compressed air at a maximum pressure of 0.7
MPa (7 kp/cm2) (100 psi)
Blow up and down along the paper pleats on the inside
of the filter element. Hold the nozzle at least 10 mm
(0.4") from the pleats to avoid tearing the paper.
Change the Primary filter after cleaning it five
times.
Wear protective goggles when working
with compressed air.
Air Cleaner
- cleaning the Primary filter
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
Tire pressure
Wheel nuts - tightening
Fig. 19 Wheel
1. Air valve
1
Fig. 18 Primary filter
Cleaning with
compressed air
CAUTION
CAUTION
WARNING
CAUTION
CAUTION

16 CA 251/301 M251EN2
Battery cell
Battery - Checking the
electrolyte level
EVERY 50 HOURS OF OPERATION (Weekly)
1
2
3
Fig. 22 Electrolyte level in battery
1. Cell cap
2. Electrolyte level
3. Plate
Never use a naked flame when checking
the battery. The electrolyte emits explosive
gas while the alternator is charging.
1. Turn the knob (1).
2. Pull out the battery shelf.
3. Wipe the top of the battery.
Wear protective goggles. The battery
contains corrosive acid. Flush with water
in the event of contact with the skin.
3. Take off the cell caps and check that electrolyte
level is about 10 mm (0.4") above the plates. Check
the level of all cells, and top up with distilled water
as required to the correct level. If ambient tempera-
ture is below zero, the engine should be run for a
while after topping up with distilled water, ie, there is
otherwise a risk that the battery fluid will freeze.
4. Make sure the venting holes in the cell caps are not
clogged. Refit the caps.
5. Battery terminals must be clean and well tightened.
Clean the terminals if corroded and grease them
with acid-free Vaseline.
Always ensure that the battery box is
closed and latched when driving.
When removing the battery, always
disconnect the negative cable first.
When fitting the battery, always connect the
positive cable first.
Take care of the battery after changing. The
battery contains lead which contaminates
the environment unless it is treated properly.
Before doing any electric welding on the
machine, disconnect the ground cable of
the battery and then disconnect all electric
connections to the alternator.
Fig. 20 Battery shelf
1. Knob
WARNING
WARNING
1
1
Fig. 21 Battery shelf
1. Knob
WARNING
CAUTION
WARNING

17CA 251/301 M251EN2
EVERY 50 HOURS OF OPERATION (Weekly)
Risk of injury. Keep everyone clear of the
articulated steering mechanism while the
engine is running.
Turn the steering wheel fully to the left to gain access
to all six lubricating nipples on the right-hand side of
the machine.
Use grease recommended in Lubricant
Specification.
1. Wipe all the nipples clean from dirt and grease.
2. Lubricate each nipple (1) with five strokes of the
grease gun. Make sure that grease penetrates the
bearings.
3. If grease does not penetrate the bearings it may be
necessary to relieve the articulated joint with a jack
and repeat the greasing procedure.
1
2
21
1
22
Articulated steering - Steering
cylinders Lubrication
Fig. 25 Steering cylinders, right side
2. Lubricating nipples, cylinder
brackets
1
1
1
1
1
1. Wipe nipples clean from dirt and grease.
2. Lubricate each nipple (2) with two strokes of the
grease gun.
3. Turn the steering wheel fully to the right and grease
the nipples on the left steering cylinder that are now
accessible. Leave a little grease on the nipples after
greasing. This will prevent dirt from entering the
nipples.
Fig. 23 Steering joint, right side
1. Lubricating nipples, steering joint
2. Lubricating nipples, steering
cylinders
Fig. 24 Steering joint, right side
1. Lubricating nipples
Steering cylinders
- Lubrication
Articulated steering -
Lubrication
CAUTION
WARNING

18 CA 251/301 M251EN2
EVERY 50 HOURS OF OPERATION (Weekly)
Levelling blade
- Lubrication
Fig. 26 Levelling blade
1. Lubricating nipples
Always lower the blade when the roller is
parked or is out of service.
1. Lower the blade.
2. Wipe the lubricating nipples clean on both sides of
the machine.
3. Lubricate each nipple (1) with four strokes of the
grease gun. Ensure that grease penetrates the
bearings. Use grease in accordance with the
lubricant specification on page 3.
1
WARNING

19CA 251/301 M251EN2
EVERY 250 HOURS OF OPERATION (Monthly)
Never work under the machine while the
engine is running. Always park the
machine on level ground and chock the
wheels.
1. Make sure the roller is level.
2. Unscrew the level plugs (1) and check that oil level
is up to the lower edge of the plug hole. Top up with
oil through the filler plug (2) as required to the
correct level. Use transmission oil. See Lubricant
Specification.
121
Rear axle differential
- Checking the oil level
Fig. 27 Level check - differential housing
1. Level plugs
2. Filler plug
1
Rear axle planetary gear
- Checking the oil level 1. Position the roller on a level surface with one plug of
the planetary gear straight up, the other one will
then be horizontal.
2. Unscrew the plugs and check that oil level is up to
the lower edge of the plug hole. Top up with oil
through the filler plug (2) as required to the correct
level. Use transmission oil. See Lubricant
Specification.
3. Check oil level of the other planetary gear of the
rear axle in the same way.
Fig. 28 Level check - planetary gear
1. Level plug
2. Filler plug
2
WARNING
2
31
Applies to both sides of the drum, ie, two checks.
1. Position the roller on a level surface, with the level
pin aligned with the top of the frame beam.
2. Unscrew the level plug (3) (small hexagon) a few
turns. Oil should then run from the plug hole if the
level is correct.
3. Top up with transmission oil as required, see
Lubricant specification. Fill via the filler plug (2)
(large hexagon).
Fig. 29 Right side of drum
1. Level pin
2. Filler plug
3. Level plug
Drum (CA 251A)
- Checking the oil level

20 CA 251/301 M251EN2
EVERY 250 HOURS OF OPERATION (Monthly)
Torque Hub (P, PD)
- Checking the Oil Level Applies to versions P and PD only.
1. Position the roller on a level surface with the filler
plug at the top.
2. Wipe clean around the plugs.
3. Remove the plugs and check that oil reaches up to
the level plug.
4. Top off as required with transmission oil. See Lubri-
cant Specification.
2
1
Fig. 31 Torque hub
1. Filler plug
2. Level/Drain plug
1
2
Fig. 30 Right side of drum
1. Filling/drain plug
2. Level plug
1. Position the roller on a flat surface with the filler plug
(1) (Large plug width across flats 24 mm) at the top
and screw off the plug.
2. Screw out the level plug (2) (Small plug width
across flats 13 mm) and oil should flow from the
plug hole. Oil level is correct when the flow stops.
If oil does not run out, top off through the plug hole
(1).
A small amount of oil may run out as the plug
(2) is screwed out, this is oil from the level
tube and does not necessarily indicate that
the level is correct.
3. Fill as required with synthetic oil MOBIL SHC 629 or
equivalent.
4. Wipe any metal particles from the magnetic filler
plug (1) before refitting.
5. Repeat the above items 1 to 4 on the other side of
the drum.
Do not overfill with oil, risk for overheating.
Drum (cassette)
- Checking the Oil Level
CAUTION
CAUTION