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6858H Coach (Spring)

6858H series coach is an extraordinary one among Zhongtong mid-size buses. Focusing on technological innovation and customer demand, Zhongtong has accomplished dozens of optimizations in buses' structure and performance, and made breakthroughs in security, energy conservation, space, and some details. 6858H is now gradually becoming a new paragon on the mid-size vehicle market.

Main Features
Appearance Upgrade
6858H coach shows splendid and cool appearance in the front part. When designing the headlights, Zhongtong refer to the design of car, to integrate the headlights into the chrome plated middle panel. The characters "ZHONGTONG" can be lightened for higher degree of recognition. The special boomerang-shaped rear lamps and LED dot matrix lights make the bus look modern and fashionable. The multi-mirror blind-free rearview mirror is adopted to enhance diver's vision.

Higher Reliability
The pipe and line layouts are optimized to improve the coach's reliability and to make maintenance easier.
The underslung frame is punched as a whole to add to the system's reliability and strength.
The dehydrator and degreaser are installed at both ends of the pipeline system to provide clean compressed air and to extend the service life of the brake system.

Better Practicability
A maintenance door is installed at the front bus part for the convenience of checking the pipeline and adjusting the headlights.
The brightness of headlights and inner dome lights is improved to guarantee drivers' and passengers' safety when driving at night.
The clutch operating system is designed with automatic gap adjusting function to automatically adjust the gap and extend the service life of the clutch.

Greater Comfortableness
We have optimized the suspension system by increasing the roll stiffness, for higher lateral stability and controllability, as well as wider applications.
The seat is user-friendly, with the back curve designed to be in line with the ergonomic principle.
The interior space is optimized to widen the space for passenger and pass way.
The multi-layer body helps to reduce the noises from both inside and outside.

Bus parameters total length (mm) 8540 Engine model ISDE210 30/EQB210-20/YC6J210-20/OM 906LA
total width (mm) 2480
total height (mm) 33, 503, 250 manufacturer DCEC/DCEC/Yuchai/Benz
inner height (mm) 1940 position/fuel diesel/diesel/diesel/diesel
wheelbase (mm) 4100 type inline cylinder, four stroke, water-cooling, intercooling
front/rear suspension (mm) 1810/2630 max power (KW) 155/155/155/170
approach angle/departure angle (º) 12/9 max torque (N.M) 800/700/710/810
height of a single step (mm) 420 displacement (ml) 6700/5883/6500/6750/6370
max total mass set by factory (kg) 11300 cylinder diameter × stroke (mm) 107X124/102X120/105X125/102X130
rated capacity (person) 33+1+1 emission standard
max speed (km/h) 100 certification
luggage compartment volume (m3) 3.3
Item Standard configuration Optional configuration
Chassis parameter chassis Zhongtong Bus Holding Co., Ltd.
gearbox Qijiang S6-80
clutch φ395; single plate; dry clutch; diaphragm spring
front axle 4.2T
rear axle 8T
suspension multiple leaf spring 9/11 air suspension (2/4 airbag)
steering integral power steering
brake double circuit air brake, drum brake KORMEE ABS, automatic gap adjusting arm, front-disc rear-drum brake
fuel tank 200L, behind front axle max volume 300L
tire 9R22.5
accumulator/alternator 165A.h/150A (140A for ISDE210 30) 150A+120A of alternator when equipped with retarder
others oil-water separator, dryer, clutch booster, air brake retarder, electromagnetic clutch fan, centralized lubrication
seat 2+2 arrangement; 33+1+1 seats; adjustable seat ZTZY3170; safety belt for each seat; driver's seat ZTZY1050, ultra-thin tour guide seat lateral movement mechanism; pedal
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