Description

Fendt 800 Vario SCR Stage 3B Tier 4i Tractor Service Manual

Manual for: AGCO Fendt
Format: PDF
March 2014
No. X990.005.066.013
4145-en (M200-P1404)
Fendt X850 EAME
English

Fendt 819, 822, 824, 826, 828 Vario SCR Stage 3B  Tractor Workshop Manual : 2346 Pages
Fendt 800 Vario SCR Stage 3B Service Training Diagram Set : 127 Pages

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Workshop Manual TABLE OF CONTENTS

Overall system/tractor …………………………………………………………….. 1
Gearbox …………………………………………………………………………………. 2
Engine …………………………………………………………………………………… 3
Overall system/front axle ………………………………………………………….4
LS signal generation ……………………………………………………………….. 5
Vehicle layout ………………………………………………………………………… 6
Overall system/air conditioning system ……………………………………. 7
Cab …………………………………………………………………………………………8
Power lifVEPC electro-hydraulic control. ……………………………………9
Overall system/compressed air system ……………………………………. 10
Electrical system ……………………………………………………………………..11
Hydraulic pump installation …………………………………………………….12
Hydraulic pipes. ………………………………………………………………………13
Overall system/hydraulic equipment …………………………………………14
Electronics ………………………………………………………………………………15
Service …………………………………………………………………………………….16

Manual Extract – Hydrostatic power distribution

The ML transmission unit is flexibly mounted in the transmission housing. The transmission housing is also the oil reservoir for the hydrostatic drive.
Oil fill: Fendt Extra Trans 10W-40 or STOU oil, viscosity SAE 10W-40 or 15W-40 First filling: approx. 145 litres
Refill: approx. 123 litres e.g. at oil change
Functional sequence, see transmission hydraulic circuit diagram
The servo pump draws in oil through the suction filter.

The temperature sensor (B009) monitors the temperature of the transmission oil.
Flow through the oil cooler is temperature-dependent.
This means that if the transmission oil is cold, little oil flows through the oil cooler, while most flows through the bypass valve. The bypass valve opens when the differential pressure exceeds approx. 3,5 bar. The transmission oil temperature is monitored by the temperature sensor.

The servo pump generates the system pressure for the ML control valves and enhanced control valves. The system pressure of approx. 25 bar is restricted by the pressure-limiting valve and restrictor orifice.