spreaders on B222 units
Tar%et roup: Bi% Truck technicians
&re're(uisites: The student should have a basic kno$led%e
about h)draulic and mechanical s)stems and
should be able to read and interpret h)draulic
schematics*
+earnin% ,b!ectives:  Describe and locate the main components of the
spreader 
Course Duration:  2 hours
-lme concept
845 Dedicated
846 "ork .ounted
847' Reach stacker 
• T$o t)pes:
mentioned on the name plate
 
4* T$ist locks
2* -;tension beam
<* Sle$in% rin%
 – Rotation an%le 9 >6 to '486 ?mechanical stops@
 – 3)draulic s$ivel 9 1void h)draulic hoses t$istin%
 – Eertical $ear pads 9 +imit the foreFaft movement
 – &o$ered pile slope 9 lo$er part of rotor split to allo$ tilt**
 – Reinforcements to allo$ intermediate containers len%ths*
 
Different reinforcements
 
oted : Solenoid HG6<I
4* Relief valve
2* &ressure valve
5* Check valve
Dampenin% c)linders*
Dampenin% Restriction
cavitation*
relief 
 DK line should be reversed*
 
• =0 bars relief pressure
5* To rotatorFbrake
• Suppliers
function activated*
2 motors
o rotation
9 Brake sprin% force
 
speed ?G48@
 
,il suppl) to rotatin%
ncludes
mount bolts ?42 or 40@ for parts
identification
• &inion $ith housin%
and bearin%s
• &lanetar) %ear
Brake assembl)*
Bonfi%lioli Brake
Nom. 5.5 – 6.0
• Sprin%s
• Brake
• &iston
• Set of discs
 
• 1ssembl)
Side tilt in case of slopin% %round or
uneven truck frames ?i*e*K a 20 ft
container on a 6th $heel@*
 G<7 L G<8 for +3 or R3 side tilt
Relief pressure valves for off center
loads*
?Self ad!ustment to container side tilt@
 
4* -lectro'valve
2* Counterbalance
<* R*3* front c)linder ports
6* +*3* front c)linder ports
=* +*3* front c)linder ports
42* +*3* rear c)linder ports
45* +*3* rear c)linder ports
 
-;tension valve located at
c)linder 
?44=0 psi@
c)linder 
9 &osition maintained b) permanent
pressure*
TA+
Stop
-;tend
-;tendFRetract
+ocated on the top of the R3 side spreader frame*
4* "rom s$ivel valve
2* 1dapter pump line
5* 1dapter tank line
6* To left hand e;t* valve
=* Relief valve
8* To ri%ht hand e;tension c)linder 
80 bar ?44=0 psi@ relief pressure
 
Both sides sho$n
on this schematic
4
4* &in
2* Bolt
5* Crank
 
4* Return rod
2* &ro;imit) s$itch
<* Seated pin
6* ut
pushes up plate 7 to$ard the pro;imit)
s$itch 2
Spreader not seated
mechanical interlock is
and lit up*
Spreader full) seated
seatedK there is ample
clearance of mechanical lock*
• .ovin% up the seated
 – Rotator bo; circuits
Spreader mechanical and electrical conditions for lock  and unlock
functions
 
⇒ nput si%nals before sendin% the lock  si%nal to the TA+ c)linder  
O oc comm!nd %eit$er m!n)!l or !)tom!tic&.
O Se!ted po(ition (i,n!l( from t$e fo)r (e!tin, pin(.
O 2nloced po(ition (i,n!l( from t$e ti(t loc po(ition (en(or( % !nd R&.
• "ten(ion f)nction not !cti!ted.
⇒ nput si%nals before sendin% the unlock  si%nal to the TA+ c)linder '
O 2nloc comm!nd %m!n)!l onl&.
O Se!ted po(ition (i,n!l( from t$e fo)r (e!tin, pin(.
O oced po(ition (i,n!l( from t$e ti(t loc po(ition (en(or( % !nd R&.
O "ten(ion f)nction not !cti!ted.
 
"ault findin%:
• !c$ connection on t$e P7 i( proided it$ !n +
 – , $en !cti!ted
8 erif if re:)ired f)nction%(& i( !cti!ted.
 – +-D color  code(
 
Step b) step procedure:
indicationK etc*@*
2* ,pen the electric bo; and check the +-Ds ?visible on the &CB@*
5* f the +-D si%nal is ,K but function does not $orkK 9 &CB is
probabl) fault)*
<* f the +-D si%nal is ,""K then check all +-Ds for the relevant circuit*
6* Check the +-Ds on the pro;imit) s$itchK solenoid*
=* Check $ire connection from &CB to solenoid or pro;imit) s$itch*
7* Check if the pro;imit) s$itch functions properl)*
8* The pro;imit) s$itch should have s$itched , < mm ?0*467 in*@
before it $ould touch the steel* Replace if fault)*
 
The automatic lockin% feature is controlled b) &CB5*
• t automaticall) locks the t$ist locks 4 P seconds after all re(uired
input si%nals have been received*
• &lu% M4 s$itches the automatic lockin% s)stem ,F,""K and
• &otentiometer &5 ad!usts the time dela) of the lockin% si%nal*
• Do not calibrate to less than 4*0 seconds*
 
Spreader 
 
  eac tac er  B222 – -+.- 847' -+-CTRC1+ AR D1R1.
Rotator 
• Spreader 
Aear pads 9
 
TA+ ma;imum allo$able $ear*
The crosshatchin%
  eac tac er  
B222'-+.-' .1T-1C- – SD- S3"T A-1R &1DS
.aintain < to = mm pla)
 – bet$een spreader frame
the lo$er rotator frame*
 – 1dd shims behind the
vertical $ear pads $hen
2* Eertical $ear pad
 
 
 
 
$hich allo$ an alternative
spreader
spreader overall dimensions
 – Block'stack front L rear