1994-2001 Maserati Quattroporte IV (Biturbo) (V6-24v-4AC 2000-2800) Engine Service & Repair Manual
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V6- 4AC- 24 2000-2800 CARATTERISTICHE TECNICHE MOTORE 2000 Tipo AM573 Numero di cilindri 6 a v di eo• Alesaggio mm 82 Corsa mm 63 Cohndrata totale cc 1996 Rapporto do oompresSione 7,6 : 1 Potenza massima kW (CV) 207,3 (282) Regime di potenza gu i/ 1' 6000 massoma Copp1a massima Nm (kgm) 359 (36, 6) Regime di giri/ 1' 4000 coppia massima Ordone do aocensione , -6-2-5-3-4 Regime mnomo giri/ 1' 1000± 50 (oondiZIOilatore inserito) ENGINE 2000 Type AM573 Number of cylinders V-6 at eo • Bore mm 82 Strol\e mm 63 Total d•splacement cc 1996 Compresso on ratio 7.6 : 1 Maximum horse kW(CV) 207,3 (282) power Maximum power revs r.p.m , 6000 Maximum torque Nm(kgm) 359 (36.6) Maximum torque revs r.p.m . 4200 Finng order 1-6-2-5-3-4 Idle speed woth r.p.m. 1000± 50 air conditioner operating 2800 AM574 6 a v di eo• 94 67 2790 7,4 : 1 205,8 (280) 5500 430,6 (43,9) 3750 1-6-2-5-3-4 1000± 50 2800 AM574 V-6 at9o• 94 67 2790 7.4 : 1 205,8 (280) 5500 430,6 (43, 9) 3750 1-6-2-5-3-4 1000± 50 MOTORE- Dati tecnici ENGINE- Technical data TECHNICAL FEATURES BASAMENTO (Fig. 1) 2000 2800 Diametro alloggiamento 73,72 ~·· 73,72 · g•• cuscinetti (A) mm Diametro cuscinetti damm 69,912 69, 912 montati (B) amm 69,940 69, 940 Spessore damm 1,895 1, 895 cusconetti (C) amm 1,904 1, 904 Diametro alloggoamento 98 ~· .. 100 ·:·,. canna mm ENGINE BLOCK (Fig. 1) 2000 2800 Bear ing seat 73.72 -g•• 73. 72 ~·· dia. (A) mm Beanng d•a., frommm 69.912 69.912 fit1ed (B) to nvn 69.940 69.940 Beanng fromnvn 1.895 1.895 thickness (C) tomm 1.904 1.904 Sleeve seat dia. mm 98 ·:·· 100 -:·· Fig.l T A -----------~-----------
MOTORE- Dati tecnici ENGINE- Technical data ALBERO MOTORE 2000 Diame1ro s11lndard perni 69,900 -g D ID dlbanco mm Diamelro slandard perni 47,753 ·gDIO di biella mm Gioco dlamelrale: - perno/cuscin. banco damm 0,026 amm 0,064 - perno/cuscin. biella damm 0, 020 amm 0,074 GtOCo asStale albero da rrvn 0, 15 mot ore amm 0, 20 Rasamenti (Fig. 2): - misura normale damm 2,340 amm 2,360 - 1 magglorazlone damm 2,375 amm 2,426 Sede anello dl tenu11l postenore: 120 ~:: - d1ametro normale mm CRANKSHAFT 2000 Standard main journal dia. mm 69.900 ·g 015 Standard connecting 47.753 "gD>O rod journal d~a. mm Fitling clearance dia.: - joumaVmain from rrvn 0.026 beari ng to rrvn 0.064 - journaVcon·rod frommm 0.020 bearing tomm 0.074 Crankshaft ma1n frommm 0.15 bearing to mm 0.20 Shims (Fig. 2): - standard size frommm 2.340 tomm 2.360 - 1St OYeiSIZe lrommm 2, 375 tomm 2.426 Rear seal nng seal: - Standard SIZB d1a. mm 120 ~:: 2800 69,900 ·gOIO 49,965 -go>o 0,026 0,064 0,032 0, 073 0, 15 0, 20 2,340 2,360 2,375 2,426 120 ~=~ 2800 69.900 ~ 010 49.965 ~DIO 0.026 0.064 0.032 0.073 0.15 0. 20 2.340 2. 360 2. 375 2.426 120 ~~: Fig .2 • V6- 4AC- 24 2000-2800 -2----------------------------qjO-----------------------------
V6- 4AC- 24 2000-2800 BIELLE (Fig. 3) Diametro testa mm Oiametro pledi mm Oiametro boccola montata mm Oiametro spinotto mm Gioco spinotto damm biella anvn Spessore testa di biella mm Gioco asSlale bielle accoppiate: - standard damm amm - al limite dl usura damm amm CON-RODS (Fig. 3) Big-end d1a. mm Small-end dia. mm Bush1ng d1a .• fitted mm Crankpm dill. mm Crankp1nlcon-rod from nvn play tomm Con· rod b1g end thickness mm Coupled con-rods end float: - standard frommm tomm - at wear limit frommm tomm 2000 50, 6t -:= 22,936 ~001 20 :~:g:; 20 ~- 0,012 0, 021 18,9 :::: 0,13 0,26 0,26 0,30 2000 50.61 · g: 22,936 ~021 20 :~g~; 20 ~- 0.012 0.021 18.9 :::: 0.13 0.26 0.26 0.30 2800 53, 70 :g:: 26,5 ~o:!l 25 ;g~ 25 -!- O.Q15 0,024 22 :::: 0,17 0,26 0,26 0,30 2800 53.70 ~:::; 26.5 ~0>1 25 :~~ 25 ~- 0,015 0.024 22 :g-g~ 0.17 0. 26 0. 26 0. 30 Fig. 3 MOTORE- Dati tecnici ENGINE- Technical data A • A' • 0 ; 0,03 mm B • B' • 0 ; 0,03 mm -------------------------~-------------------------- 3
MOTORE - Dati tecnici ENGINE- Technical data CANNA/PISTONE 2000 Canna (Fi g. 4) D1ametro esterno mlnimo mm sa !.~ Diametro interno standard mm 82 -~··· Sede canna su basamento mm 98 ·:··· Materiate Alluminio Pistone D• ametro mm 82 -:: Canna/Pi stone G1oc0 mm O, Ot + 0,05 Pi stone/Spinotto D~C~metro sede sp1nono mm 2o ::: 01ametro spi nono mm 20 .:..,. 2800 too =:~ 94 -~··· tOO ·~··· Ghisa 93,9 :~: 0,03 + 0,07 2s ::: 25 .: .... N.B. La ritevazione di tali misure va effettuata aile distanze prescritte In F1g. 4 e su due assl d1ametrali perpendicolari Ira loro; Ia misura ef· fettJva del diametro lnterno sara il nsultato della media delle sei mi- sure cosi attenuate. Tune le canne sono nportate. LINER/PISTON 2000 2800 Liner (Fig. 4) M1mmum outside dia. mm sa :~ too =:~ Standard inside d1a. mm 82 .~ .. 94 ·~·~ Sleeve seat in crankcase mm 98 ~ 0 ' 1 tOO ·~··s Material Aluminium Cast·iron Piston Diameter mm 82 :: 93.9 ::: Liner/Piston Clearance mm O. Ot + 0.05 0.03 + 0.07 Pis ton/Crankpin Crankp1n seat 2o ::: 2s :!: d~C~. mm Crankpin dia. mm 2o .: ... 25 .: ... NOTE. These measurements should be taken at the distances pre· scribed in Fig. 4 and on two diametrically opposed axes. The actual measurement of i nsi de diameter will be the average of the two measurements taken. All the liners are 1nserts. !I ! I j I I ' ~I Fig.4 • V6- 4AC- 24 2000-2800 f'-1 II - II -4-- -- -- -----------------------QiO------------ -- -----------------
V6- 4AC- 24 2000-2800 SEGMENT! (Fig. 5) Altezza cava sui pistone. - segmento supenore mm - segmento inlerlore mm - raschiaolio mm Spessore del segmento: - segmento superiors mm - segmento Inferiors mm - raschtaolio mm Gioco gtunzione segmentt - segmento superiors mm - segmento inferiors mm - raschiaolio mm 2000 2800 1.2 :::! 1,2 :::: 1,2 :::! 1,5 ::::~ 3 ::::: 3.5 ::·~ 1 !2 :::;: 1,2 !~ 1 ,2 ~·~ 1 .5 ~~ 3 .0010 -oOH 3 .s :::: 0,3 + 0,45 0,30 + 0,55 0,3 + 0,5 0,30 + 0,55 0,25 + 0,40 0,30 + 0,60 N.B. La rilevazione del gioco gtunzione segmenti va effettuato a seg· menlo inserito nel ctltndro ad una distanza di 10 mm dall a sommlta del cilindro stesso. RINGS (Fig. 5) 2000 2800 Groove width in ptston: - top compression nng mm 1.2 !:! 1.2 :::: - 2nd compreSStOn ring mm 1.2 :::! 1.5 :::! - oil scraper mm 3: :g:: 3.5 ::~~ Atng thickness: - top compresst on nng mm 1.2 :::: 1.2 :::: - 2nd compresston ring mm 1 .2 ~:: 1.5 :::: - oil scraper mm 3 -o 010 -oo:zo 3.5 :::~~ Atng groove clearances - top compress100 nng mm 0.3 + 0. 45 0. 30 + 0. 55 - 2nd compression ring mm 0.3 + 0.5 0.30 + 0.55 - oil scr aper mm 0.25 + 0.40 0.30 + 0.60 NOTE. Ring grove clearance should be measured with the rong tnserted in the cylinder at a distance or 10 mm lor lhe top or the cyl- tnder . MOTORE - Dati tecnici ENGINE- Technical data "'~ ..... ®......__ __ 2000 ~2800 Fig.S .& ------------------------------QiP---------------- -- -------------5
MOTORE - Dati tecnici ENGINE- Technical data TESTA CILINDRI 2000 Diametro geno mandata olio al castelletto mm 1,5 Limite massimo per spianalura mm 0,2 Volume camera di combustion a cm 3 41,5 :1: 0,5 CYLINDER HEAD 2000 Oil delivery jet dia. on cambox mm 1.5 Ma.xomum limit for nanening mm 0 .2 Combustion chamber volume cm3 41.5:1:0.5 2800 1,5 0,2 41,5 :1: 0,5 2800 1.5 0 .2 41.5 ± 0.5 GUIDE VALVOLE lnterferenza tra alloggoamento e guide valvole: - aspirazione e scarlco da mm amm Diamelro alloggiamento guida: - aspirazione e scarico mm Diametro esterno guoda: - aspirazione e scanco mm Diametro onterno guida: - asplrazione mm - scarico mm Gioco guida e stelo valvola: - asplrazione mm - scarico mm V6- 4AC- 24 2000-2800 2000 2800 0,025 0, 025 0,043 0, 043 13 ~01 13 .: •• 13 :.: 13 ::: 7-<1 0:10 _, .,. 7 -<10:10 """"" 7 .. . ... .0,033 7 ·00&5 •0033 0,02 + 0, 045 0,02 + 0,045 0,033 + 0, 070 0, 033 + 0,070 N.B. Le temperature per eseguire l' accoppiamento sono: testa 1 OO"C; gu1de ·30"C (con azoto o freezer). VALVE GUIDES 2000 2800 Interference between slot and valve guide: - intake/exhaust from mm 0. 025 0. 025 tomm 0. 043 0.043 Diameter of gu1 de slot: - Intake/exhaust mm 13 ~01 13 ! •. Outside guide diameter: - intake/exhaust mm 13 ::: 13 :::: Insi de guide diameter: - intake mm 7::: 7 ·0055 ·0033 - exhaust mm 7' 0""' ..... 7 .o .. . •00:10 Valve guide/stem clearance: - 1ntake mm 0. 02 +0. 045 0 02+ 0 045 - exhaust mm 0.033 + 0. 070 0. 033 + 0.070 NOTE. The temperatures for coupling are: head 1oo•c ; guides -3o•c (with nitrogen or freezer) . -6----------------------------- QiO-------- ----------------------
V6 - 4AC - 24 2000-2800 VALVOLE (Fig. 6) Valvole gloco a freddo: - asp•r ru:•one (A) mm - scarico (B) mm Pastlglle: - disponlbill da mm - con classi da rrvn fino a rrvn D1ametro allogg•amento b•cch•enm nel castelletto mm D1ametro biCChierini asp1rru:ione a scarico mm G•oco b•cchlerino da mm nel castelletto amm Diametro slelo valvola asplrru:lone e sea rico mm D1ametro fungo valvola: - asp1rru:IOI'Ie (C) nun - scarlCO (D) mm VALVES (Fig. 6) Cold clearance value: - intake (A) mm - exhaust (B) nun Sh•ms available: -f rom nun - with classes of mm up to mm Seat diameter of tappets in cambox mm Inta ke and exhaust tappet d•ameter mm Tappet play frommm in cambox tomm Valve stem d•ameter 111take and exhaust mm Valve head d•ameter: - internal intake (C) mm - exhaust (D) mm 2000 0,35 + 0,40 0,45 + 0,50 2,10 0,025 4, 475 32 ~011 32~; 0,010 0,036 7 .:01$ 30 27,5 2000 0. 35 + 0.40 0. 45 + 0. 50 2.10 0.025 4.475 32 ·~··· 32 :::: 0. 010 0. 036 7 .! ... 30 27.5 2800 0,35 + 0, 40 0,45 + 0,50 2,10 0,025 4,475 32 ::··· 32 .!:~: 0,010 0,036 7 !o1s 30 27,5 2800 0. 35 + 0.40 0.45 + 0.50 2. 10 0. 025 4.475 32 ;g••• 32 :::! 0. 010 0. 036 7..:015 30 27.5 Fig. 6 MOTORE - Dati tecnici ENGINE- Technical data 0 ------------------------------Qi0------------------------------7
MOTORE - Dati tecnici ENGINE - Technical data MOLLE VALVOLE (Fig. 7) 2000 Molle interne aspiraz1one e scarico: - diametro filo mm 2,5 - lunghezza Iibera mm 34,5 - lungh. sotto carico <: 21 kg mm 21 ,4 Molle esterne asp1razione e scarico: - diametro filo mm 3,5 - lunghezza Iibera mm 40 - lungh. sotto canco 2: 42kg mm 24,4 VALVE SPRINGS (Fig. 7) 2000 Intake and exhaust internal springs: - wue diameter mm 2.5 - free length mm 34.5 - length under load <! 21 kg mm 21,4 Intake and exhaust external spnngs: - w~re diameter mm 3.5 - free length mm 40 - length under load <! 42 kg mm 24,4 Fig. 7 .._ 8 2800 2,5 34,5 21 ,4 3,5 40 24 4 2800 2.5 34.5 21 ,4 3.5 40 24,4 ALBERO Dl DISTRIBUZIONE Oiametro pemi mm Diametro supporti nel castelletto mm Gioco supporti/albero damm amm G1oco assiale albero damm amm Alzata camma (Fig. 8) asplraz1one e scarico mm V6- 4AC - 24 2000-2800 2000 2800 26 ::: 26 ::::: 26 ·~·""' 26 ·~·""' 0,04 0,04 0,076 0, 076 0,10 0,10 0,15 0,15 8,6 8,6 N.B. In tutti i motori il vatore dell'alzata si ricava per differenza Ira le quote ·A· e ·e· indicate 1n figura 8. CAMSHAFT 2000 2800 Journal diameter mm 26 ::::: 26 ::::: Beanng diameter in mm 26 ·~""' 26 ~021 Bearing/shaft frommm 0.04 0.04 clearance tomm 0. 076 0.076 Camshaft end play frommm 0.10 0.10 tomm 0.15 0.15 Cam lift (Fig. 6) intake/exhaust mm 8.6 8.6 NOTE. In all engi nes, the lilt value is the difference between diS· tances ·A" and ·a· 1ndtcated m figure 8. <0 co Fig. 8 .._
V6- 4AC- 24 2000-2800 LUBRIFICAZIONE MOTORE Pressione net arcuito funzionamento a motore caldo: - a 1000 g1ri/min bar - a 6000 girl/min bar Pompa olio (Fig. 10) Quote pompa olio e alloggia- mento (Fig. 9) - caVItA nel basamento (A) mm - CBVItA nel corpo por1llB (B) mm - spessore coperchio pompa (C) mm - spessore ingranaggi (D) mm - cavitll. alloggiamento ingranaggio (E) mm Fittro oliO Vatvota regotatrice pressione: - tarata a kg/cm 2 - lungheua Iibera mona valvota mm - a lunghezza 60,5 mm canco kg ENGINE LUBRICATION Circuit pressure With warm engine: - at 1000 r.p.m . bar - at 6000 r.p.m. bar 011 pump (Fig. 10) Oil pump size and seat (Fig. 9) - engine block recess (A) mm - pump cover seat (B) mm - pump cover thickness (C) mm - gear thickness (0) mm - gear seat recess, 2nd series (E) mm Oil filter Pressure valve setting kg/cm 2 - valve spring free length mm - load with 60.5 length kg 2000 2800 > 2,5 > 2,5 4,5 + 5 4,5 + 5 a ingranaggi 5,50 ± 0,05 5, 50 ±0, 05 1,90 ::.oo 1, 90 '!"' 7,40 ~::; 7,40 ~~ 12,00 ~ . .. 12,00 ~.., 12,00 :~: 12, 00 :~: uno a rete sui pescante ed uno a fittragglo sui basamento 4 4 74,7 74,7 15±4% 15 :1: 4% 2000 2800 >2.5 > 2.5 4.5 + 5 4.5 + 5 gears 5.50 ± 0. 05 5. 50 :1: 0.05 1. 90 :~0$ 1.90 ·~OS 7.40 ~~ 7.40 ~~ 12.00 ~.., 12. 00 .: .. 12.oo ::: 12.00 ::: one of mesh rype on scoop and one full I low on engne block 4 4 74.7 74.7 15 :!: 4% 15 ± 4% Fig.9 A MOTORE- Dati tecnici ENGINE- Technical data _..,c_ ------------------------------~------------------------------ 9
This professional technical manual contains service, maintenance, and troubleshooting information for your Maserati 1994-2001 Quattroporte IV (Biturbo) (V6-24v-4AC 2000-2800) Engine, covering All Models/Engines/Trim/Transmissions Types.
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This manual for Maserati 1994-2001 Quattroporte IV (Biturbo) (V6-24v-4AC 2000-2800) Engine is divided into different sections. Each section covers a specific component or system and, in addition to the standard service procedures, includes disassembling, inspecting, and assembling instructions. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail.
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1994-2001 Maserati Quattroporte IV (Biturbo) (V6-24v-4AC 2000-2800) Engine Service & Repair Manual